/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/array-crafted/zero_sum_const_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:16:49,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:16:49,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:16:49,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:16:49,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:16:49,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:16:49,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:16:49,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:16:49,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:16:49,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:16:49,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:16:49,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:16:49,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:16:49,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:16:49,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:16:49,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:16:49,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:16:49,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:16:49,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:16:49,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:16:49,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:16:49,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:16:49,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:16:49,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:16:49,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:16:49,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:16:49,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:16:49,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:16:49,787 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 20:16:49,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:16:49,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:16:49,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:16:49,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:16:49,804 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:16:49,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:16:49,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:16:49,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:16:49,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:16:49,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:16:49,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:16:49,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:16:49,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:16:49,806 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:16:49,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:16:49,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:16:49,806 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:16:49,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:16:49,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:16:49,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:16:49,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:16:49,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:16:49,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:16:49,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:16:49,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:16:49,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:16:49,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:16:49,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:16:49,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:16:49,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:16:50,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:16:50,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:16:50,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:16:50,120 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:16:50,120 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:16:50,121 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2019-11-23 20:16:50,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33cb852/547fea715b5742eb85a4424409709061/FLAG81aa8b042 [2019-11-23 20:16:50,677 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:16:50,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2019-11-23 20:16:50,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33cb852/547fea715b5742eb85a4424409709061/FLAG81aa8b042 [2019-11-23 20:16:51,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33cb852/547fea715b5742eb85a4424409709061 [2019-11-23 20:16:51,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:16:51,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:16:51,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:16:51,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:16:51,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:16:51,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf64b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51, skipping insertion in model container [2019-11-23 20:16:51,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:16:51,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:16:51,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:16:51,296 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:16:51,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:16:51,418 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:16:51,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51 WrapperNode [2019-11-23 20:16:51,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:16:51,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:16:51,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:16:51,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:16:51,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:16:51,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:16:51,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:16:51,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:16:51,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (1/1) ... [2019-11-23 20:16:51,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:16:51,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:16:51,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:16:51,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:16:51,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (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 20:16:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:16:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 20:16:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:16:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:16:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:16:51,880 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:16:51,880 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-23 20:16:51,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:16:51 BoogieIcfgContainer [2019-11-23 20:16:51,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:16:51,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:16:51,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:16:51,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:16:51,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:16:51" (1/3) ... [2019-11-23 20:16:51,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e32dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:16:51, skipping insertion in model container [2019-11-23 20:16:51,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:16:51" (2/3) ... [2019-11-23 20:16:51,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e32dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:16:51, skipping insertion in model container [2019-11-23 20:16:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:16:51" (3/3) ... [2019-11-23 20:16:51,889 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m3.c [2019-11-23 20:16:51,899 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:16:51,905 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:16:51,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:16:51,935 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:16:51,935 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:16:51,935 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:16:51,936 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:16:51,936 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:16:51,936 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:16:51,936 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:16:51,936 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:16:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-23 20:16:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 20:16:51,955 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:51,956 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 20:16:51,957 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:51,961 INFO L82 PathProgramCache]: Analyzing trace with hash 534528496, now seen corresponding path program 1 times [2019-11-23 20:16:51,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:51,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382592710] [2019-11-23 20:16:51,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,088 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 20:16:52,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382592710] [2019-11-23 20:16:52,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:16:52,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:16:52,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631003796] [2019-11-23 20:16:52,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:16:52,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:16:52,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:16:52,113 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-11-23 20:16:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:52,132 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2019-11-23 20:16:52,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:16:52,133 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-11-23 20:16:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:52,142 INFO L225 Difference]: With dead ends: 57 [2019-11-23 20:16:52,142 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 20:16:52,145 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 20:16:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 20:16:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-23 20:16:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-23 20:16:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-11-23 20:16:52,185 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2019-11-23 20:16:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:52,186 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-11-23 20:16:52,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:16:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2019-11-23 20:16:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 20:16:52,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:52,187 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 20:16:52,188 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash -697412484, now seen corresponding path program 1 times [2019-11-23 20:16:52,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:52,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351904548] [2019-11-23 20:16:52,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,282 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 20:16:52,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351904548] [2019-11-23 20:16:52,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:16:52,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:16:52,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108714102] [2019-11-23 20:16:52,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:16:52,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:16:52,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:16:52,287 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2019-11-23 20:16:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:52,363 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-23 20:16:52,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:16:52,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-23 20:16:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:52,366 INFO L225 Difference]: With dead ends: 42 [2019-11-23 20:16:52,366 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 20:16:52,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:16:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 20:16:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-23 20:16:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 20:16:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2019-11-23 20:16:52,376 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 19 [2019-11-23 20:16:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:52,377 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2019-11-23 20:16:52,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:16:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2019-11-23 20:16:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:16:52,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:52,378 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] [2019-11-23 20:16:52,379 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash -145263842, now seen corresponding path program 1 times [2019-11-23 20:16:52,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:52,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250870582] [2019-11-23 20:16:52,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,438 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 20:16:52,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250870582] [2019-11-23 20:16:52,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:16:52,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:16:52,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211273449] [2019-11-23 20:16:52,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:16:52,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:16:52,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:16:52,441 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2019-11-23 20:16:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:52,533 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2019-11-23 20:16:52,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:16:52,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-23 20:16:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:52,534 INFO L225 Difference]: With dead ends: 73 [2019-11-23 20:16:52,535 INFO L226 Difference]: Without dead ends: 40 [2019-11-23 20:16:52,535 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 20:16:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-23 20:16:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-11-23 20:16:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-23 20:16:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-23 20:16:52,543 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 21 [2019-11-23 20:16:52,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:52,543 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-23 20:16:52,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:16:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2019-11-23 20:16:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-23 20:16:52,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:52,544 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] [2019-11-23 20:16:52,545 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:52,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1250455616, now seen corresponding path program 1 times [2019-11-23 20:16:52,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:52,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129601396] [2019-11-23 20:16:52,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 20:16:52,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129601396] [2019-11-23 20:16:52,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:16:52,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:16:52,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874532024] [2019-11-23 20:16:52,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:16:52,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:52,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:16:52,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:16:52,637 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 4 states. [2019-11-23 20:16:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:52,755 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2019-11-23 20:16:52,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:16:52,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-11-23 20:16:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:52,757 INFO L225 Difference]: With dead ends: 69 [2019-11-23 20:16:52,757 INFO L226 Difference]: Without dead ends: 41 [2019-11-23 20:16:52,758 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:16:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-23 20:16:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-11-23 20:16:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-23 20:16:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-11-23 20:16:52,774 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 23 [2019-11-23 20:16:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:52,774 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-11-23 20:16:52,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:16:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-11-23 20:16:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 20:16:52,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:52,778 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:16:52,779 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash 615846698, now seen corresponding path program 1 times [2019-11-23 20:16:52,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:52,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674202994] [2019-11-23 20:16:52,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 20:16:52,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674202994] [2019-11-23 20:16:52,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722099419] [2019-11-23 20:16:52,885 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 20:16:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:52,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:16:52,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:16:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 20:16:53,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:16:53,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-23 20:16:53,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671563357] [2019-11-23 20:16:53,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 20:16:53,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:53,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 20:16:53,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:16:53,035 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2019-11-23 20:16:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:53,156 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2019-11-23 20:16:53,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:16:53,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-23 20:16:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:53,157 INFO L225 Difference]: With dead ends: 65 [2019-11-23 20:16:53,158 INFO L226 Difference]: Without dead ends: 37 [2019-11-23 20:16:53,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:16:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-23 20:16:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-23 20:16:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-23 20:16:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-11-23 20:16:53,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2019-11-23 20:16:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:53,169 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-11-23 20:16:53,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 20:16:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-11-23 20:16:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-23 20:16:53,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:53,171 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:16:53,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:16:53,374 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash -160084788, now seen corresponding path program 2 times [2019-11-23 20:16:53,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:53,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384496449] [2019-11-23 20:16:53,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 20:16:53,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384496449] [2019-11-23 20:16:53,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043767173] [2019-11-23 20:16:53,466 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 20:16:53,524 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:16:53,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:16:53,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:16:53,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:16:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 20:16:53,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:16:53,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 20:16:53,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120316957] [2019-11-23 20:16:53,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 20:16:53,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:16:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 20:16:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:16:53,562 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2019-11-23 20:16:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:16:53,729 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2019-11-23 20:16:53,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 20:16:53,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-23 20:16:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:16:53,733 INFO L225 Difference]: With dead ends: 79 [2019-11-23 20:16:53,733 INFO L226 Difference]: Without dead ends: 55 [2019-11-23 20:16:53,734 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-23 20:16:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-23 20:16:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-11-23 20:16:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-23 20:16:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2019-11-23 20:16:53,750 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2019-11-23 20:16:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:16:53,750 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2019-11-23 20:16:53,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 20:16:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2019-11-23 20:16:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-23 20:16:53,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:16:53,754 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:16:53,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:16:53,958 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:16:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:16:53,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1337652904, now seen corresponding path program 3 times [2019-11-23 20:16:53,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:16:53,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220417968] [2019-11-23 20:16:53,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:16:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:16:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:16:56,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220417968] [2019-11-23 20:16:56,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055890373] [2019-11-23 20:16:56,128 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 20:16:56,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 20:16:56,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:16:56,189 WARN L253 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 71 conjunts are in the unsatisfiable core [2019-11-23 20:16:56,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:16:59,950 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:16:59,951 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2019-11-23 20:16:59,952 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-23 20:16:59,963 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:16:59,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:16:59,969 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:16:59,970 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:32 [2019-11-23 20:17:00,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:17:00,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:17:00,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:17:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:17:00,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:00,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39] total 66 [2019-11-23 20:17:00,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762980103] [2019-11-23 20:17:00,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2019-11-23 20:17:00,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2019-11-23 20:17:00,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4081, Unknown=0, NotChecked=0, Total=4290 [2019-11-23 20:17:00,405 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 66 states. [2019-11-23 20:17:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:07,538 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2019-11-23 20:17:07,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-23 20:17:07,544 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 47 [2019-11-23 20:17:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:07,546 INFO L225 Difference]: With dead ends: 131 [2019-11-23 20:17:07,546 INFO L226 Difference]: Without dead ends: 125 [2019-11-23 20:17:07,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=443, Invalid=8677, Unknown=0, NotChecked=0, Total=9120 [2019-11-23 20:17:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-23 20:17:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 77. [2019-11-23 20:17:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-23 20:17:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2019-11-23 20:17:07,563 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2019-11-23 20:17:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:07,563 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2019-11-23 20:17:07,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 66 states. [2019-11-23 20:17:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2019-11-23 20:17:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-23 20:17:07,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:07,565 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:07,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:07,771 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:07,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1235984134, now seen corresponding path program 4 times [2019-11-23 20:17:07,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:07,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261540460] [2019-11-23 20:17:07,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-23 20:17:07,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261540460] [2019-11-23 20:17:07,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862984429] [2019-11-23 20:17:07,857 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 20:17:07,914 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:17:07,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:17:07,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 20:17:07,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-23 20:17:07,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:07,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-11-23 20:17:07,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669186895] [2019-11-23 20:17:07,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 20:17:07,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:07,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 20:17:07,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:17:07,968 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 13 states. [2019-11-23 20:17:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:08,289 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2019-11-23 20:17:08,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 20:17:08,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2019-11-23 20:17:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:08,291 INFO L225 Difference]: With dead ends: 177 [2019-11-23 20:17:08,292 INFO L226 Difference]: Without dead ends: 104 [2019-11-23 20:17:08,292 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-23 20:17:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-23 20:17:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2019-11-23 20:17:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-23 20:17:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2019-11-23 20:17:08,317 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 49 [2019-11-23 20:17:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:08,317 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2019-11-23 20:17:08,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 20:17:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2019-11-23 20:17:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-23 20:17:08,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:08,319 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:08,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:08,525 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash -925733540, now seen corresponding path program 5 times [2019-11-23 20:17:08,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:08,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017891138] [2019-11-23 20:17:08,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-23 20:17:08,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017891138] [2019-11-23 20:17:08,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777682494] [2019-11-23 20:17:08,600 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 20:17:08,678 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-23 20:17:08,678 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:17:08,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 20:17:08,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-23 20:17:08,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:08,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-11-23 20:17:08,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377821552] [2019-11-23 20:17:08,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 20:17:08,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:08,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 20:17:08,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:17:08,727 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 13 states. [2019-11-23 20:17:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:09,023 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2019-11-23 20:17:09,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 20:17:09,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2019-11-23 20:17:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:09,025 INFO L225 Difference]: With dead ends: 96 [2019-11-23 20:17:09,025 INFO L226 Difference]: Without dead ends: 68 [2019-11-23 20:17:09,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2019-11-23 20:17:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-23 20:17:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2019-11-23 20:17:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-23 20:17:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2019-11-23 20:17:09,034 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51 [2019-11-23 20:17:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:09,035 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2019-11-23 20:17:09,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 20:17:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2019-11-23 20:17:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-23 20:17:09,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:09,036 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:09,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:09,240 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:09,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1781065978, now seen corresponding path program 6 times [2019-11-23 20:17:09,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:09,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987249137] [2019-11-23 20:17:09,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:11,146 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-11-23 20:17:11,296 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2019-11-23 20:17:11,499 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2019-11-23 20:17:11,708 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2019-11-23 20:17:12,260 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-11-23 20:17:12,465 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-11-23 20:17:12,675 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-11-23 20:17:12,859 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-11-23 20:17:13,047 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-11-23 20:17:13,692 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2019-11-23 20:17:13,928 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-11-23 20:17:14,132 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-11-23 20:17:14,324 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-11-23 20:17:14,528 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-11-23 20:17:15,098 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-11-23 20:17:15,347 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-11-23 20:17:15,586 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-11-23 20:17:15,788 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-11-23 20:17:16,002 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-11-23 20:17:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:17:17,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987249137] [2019-11-23 20:17:17,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255846440] [2019-11-23 20:17:17,419 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 20:17:17,475 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-23 20:17:17,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:17:17,478 WARN L253 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 94 conjunts are in the unsatisfiable core [2019-11-23 20:17:17,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:22,386 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:17:22,387 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:17:22,388 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:17:22,389 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:17:22,390 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:17:22,400 INFO L343 Elim1Store]: treesize reduction 3, result has 76.9 percent of original size [2019-11-23 20:17:22,401 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 20 [2019-11-23 20:17:22,402 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:17:22,409 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:17:22,410 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:17:22,410 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:3 [2019-11-23 20:17:22,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:17:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:17:22,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:22,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 47] total 101 [2019-11-23 20:17:22,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303132001] [2019-11-23 20:17:22,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 101 states [2019-11-23 20:17:22,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2019-11-23 20:17:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=9228, Unknown=0, NotChecked=0, Total=10100 [2019-11-23 20:17:22,556 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 101 states. [2019-11-23 20:17:24,321 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2019-11-23 20:17:26,268 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2019-11-23 20:17:27,166 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 59 [2019-11-23 20:17:27,540 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2019-11-23 20:17:28,442 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 49 [2019-11-23 20:17:28,741 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2019-11-23 20:17:29,371 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2019-11-23 20:17:29,794 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 62 [2019-11-23 20:17:30,223 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 52 [2019-11-23 20:17:30,570 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 60 [2019-11-23 20:17:31,450 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2019-11-23 20:17:31,821 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 30 [2019-11-23 20:17:33,447 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2019-11-23 20:17:33,700 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2019-11-23 20:17:34,058 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2019-11-23 20:17:35,477 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2019-11-23 20:17:36,298 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 58 [2019-11-23 20:17:36,790 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2019-11-23 20:17:37,114 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2019-11-23 20:17:37,465 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 33 [2019-11-23 20:17:37,804 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 54 [2019-11-23 20:17:38,122 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 30 [2019-11-23 20:17:38,374 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2019-11-23 20:17:38,665 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2019-11-23 20:17:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:38,689 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2019-11-23 20:17:38,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-11-23 20:17:38,690 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 61 [2019-11-23 20:17:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:38,692 INFO L225 Difference]: With dead ends: 144 [2019-11-23 20:17:38,692 INFO L226 Difference]: Without dead ends: 106 [2019-11-23 20:17:38,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8462 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=2092, Invalid=22400, Unknown=0, NotChecked=0, Total=24492 [2019-11-23 20:17:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-23 20:17:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2019-11-23 20:17:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-23 20:17:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2019-11-23 20:17:38,711 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 61 [2019-11-23 20:17:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:38,712 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2019-11-23 20:17:38,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 101 states. [2019-11-23 20:17:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2019-11-23 20:17:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-23 20:17:38,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:38,713 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:38,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:38,919 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:38,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1027597032, now seen corresponding path program 7 times [2019-11-23 20:17:38,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:38,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734067423] [2019-11-23 20:17:38,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-23 20:17:39,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734067423] [2019-11-23 20:17:39,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765968094] [2019-11-23 20:17:39,032 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 20:17:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:39,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 20:17:39,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-23 20:17:39,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:39,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-11-23 20:17:39,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678401721] [2019-11-23 20:17:39,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-23 20:17:39,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:39,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-23 20:17:39,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-11-23 20:17:39,162 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 16 states. [2019-11-23 20:17:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:39,603 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2019-11-23 20:17:39,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-23 20:17:39,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2019-11-23 20:17:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:39,605 INFO L225 Difference]: With dead ends: 213 [2019-11-23 20:17:39,605 INFO L226 Difference]: Without dead ends: 126 [2019-11-23 20:17:39,606 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2019-11-23 20:17:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-23 20:17:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2019-11-23 20:17:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-23 20:17:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2019-11-23 20:17:39,627 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 63 [2019-11-23 20:17:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:39,627 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2019-11-23 20:17:39,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-23 20:17:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2019-11-23 20:17:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-23 20:17:39,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:39,629 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:39,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:39,838 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash 156775434, now seen corresponding path program 8 times [2019-11-23 20:17:39,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:39,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127037571] [2019-11-23 20:17:39,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-23 20:17:39,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127037571] [2019-11-23 20:17:39,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246953604] [2019-11-23 20:17:39,932 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 20:17:39,984 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:17:39,984 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:17:39,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 20:17:39,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-23 20:17:40,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:17:40,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-11-23 20:17:40,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787383186] [2019-11-23 20:17:40,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-23 20:17:40,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:17:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-23 20:17:40,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-23 20:17:40,078 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 16 states. [2019-11-23 20:17:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:17:40,573 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2019-11-23 20:17:40,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-23 20:17:40,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2019-11-23 20:17:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:17:40,574 INFO L225 Difference]: With dead ends: 118 [2019-11-23 20:17:40,574 INFO L226 Difference]: Without dead ends: 82 [2019-11-23 20:17:40,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2019-11-23 20:17:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-23 20:17:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2019-11-23 20:17:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-23 20:17:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2019-11-23 20:17:40,586 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2019-11-23 20:17:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:17:40,587 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2019-11-23 20:17:40,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-23 20:17:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2019-11-23 20:17:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-23 20:17:40,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:17:40,590 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:17:40,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:17:40,791 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:17:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:17:40,791 INFO L82 PathProgramCache]: Analyzing trace with hash 958143540, now seen corresponding path program 9 times [2019-11-23 20:17:40,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:17:40,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062210476] [2019-11-23 20:17:40,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:17:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:17:42,104 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2019-11-23 20:17:42,806 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-11-23 20:17:43,299 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-11-23 20:17:43,480 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-11-23 20:17:43,656 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-11-23 20:17:43,836 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-11-23 20:17:44,032 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-23 20:17:44,213 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-23 20:17:44,366 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-11-23 20:17:45,027 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-11-23 20:17:45,251 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-11-23 20:17:45,472 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-11-23 20:17:45,742 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-11-23 20:17:45,952 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-11-23 20:17:46,170 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-11-23 20:17:46,364 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-11-23 20:17:46,676 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2019-11-23 20:17:46,847 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2019-11-23 20:17:47,054 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2019-11-23 20:17:47,252 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2019-11-23 20:17:47,455 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2019-11-23 20:17:47,654 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-11-23 20:17:47,856 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-11-23 20:17:48,060 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-11-23 20:17:48,250 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-11-23 20:17:48,524 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-11-23 20:17:48,713 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-11-23 20:17:49,020 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-11-23 20:17:49,219 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-11-23 20:17:49,415 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-11-23 20:17:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:17:50,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062210476] [2019-11-23 20:17:50,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597664145] [2019-11-23 20:17:50,927 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 20:17:50,983 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-23 20:17:50,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:17:50,987 WARN L253 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 122 conjunts are in the unsatisfiable core [2019-11-23 20:17:50,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:17:51,050 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 20:17:51,050 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:17:51,059 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:17:51,060 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:17:51,060 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-11-23 20:18:01,411 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,412 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:18:01,413 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,414 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,415 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,420 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:18:01,421 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,424 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:18:01,449 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:18:01,450 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 60 treesize of output 74 [2019-11-23 20:18:01,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,457 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-23 20:18:01,503 INFO L567 ElimStorePlain]: treesize reduction 97, result has 27.6 percent of original size [2019-11-23 20:18:01,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,505 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:18:01,505 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:82, output treesize:21 [2019-11-23 20:18:01,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:01,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:18:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 20:18:02,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:18:02,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 58] total 121 [2019-11-23 20:18:02,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617633427] [2019-11-23 20:18:02,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 121 states [2019-11-23 20:18:02,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2019-11-23 20:18:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=13507, Unknown=0, NotChecked=0, Total=14520 [2019-11-23 20:18:02,044 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 121 states. [2019-11-23 20:18:05,977 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 43 [2019-11-23 20:18:06,357 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 46 [2019-11-23 20:18:06,784 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 47 [2019-11-23 20:18:07,226 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 61 [2019-11-23 20:18:07,705 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2019-11-23 20:18:08,167 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 54 [2019-11-23 20:18:08,981 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2019-11-23 20:18:09,824 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2019-11-23 20:18:12,012 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2019-11-23 20:18:12,925 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2019-11-23 20:18:13,353 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2019-11-23 20:18:13,831 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2019-11-23 20:18:14,845 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2019-11-23 20:18:16,813 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2019-11-23 20:18:18,193 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2019-11-23 20:18:18,671 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2019-11-23 20:18:19,671 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2019-11-23 20:18:22,009 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2019-11-23 20:18:24,478 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-11-23 20:18:24,976 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-11-23 20:18:27,349 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 88 [2019-11-23 20:18:27,892 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 86 [2019-11-23 20:18:28,474 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2019-11-23 20:18:30,253 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73