/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:10:56,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:10:56,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:10:56,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:10:56,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:10:56,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:10:56,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:10:56,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:10:56,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:10:56,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:10:56,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:10:56,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:10:56,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:10:56,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:10:56,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:10:56,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:10:56,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:10:56,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:10:56,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:10:56,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:10:56,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:10:56,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:10:56,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:10:56,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:10:56,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:10:56,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:10:56,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:10:56,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:10:56,988 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 [2019-11-06 22:10:57,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:10:57,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:10:57,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:10:57,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:10:57,012 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:10:57,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:10:57,012 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:10:57,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:10:57,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:10:57,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:10:57,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:10:57,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:10:57,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:10:57,015 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:10:57,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:10:57,015 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:10:57,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:10:57,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:10:57,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:10:57,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:10:57,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:10:57,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:10:57,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:10:57,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:10:57,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:10:57,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:10:57,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:10:57,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:10:57,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:10:57,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:10:57,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:10:57,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:10:57,313 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:10:57,314 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:10:57,314 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i [2019-11-06 22:10:57,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76a072f0/65a9d47868104e598c1e747998ed88e2/FLAG576898660 [2019-11-06 22:10:57,834 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:10:57,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep05-1.i [2019-11-06 22:10:57,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76a072f0/65a9d47868104e598c1e747998ed88e2/FLAG576898660 [2019-11-06 22:10:58,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76a072f0/65a9d47868104e598c1e747998ed88e2 [2019-11-06 22:10:58,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:10:58,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:10:58,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:10:58,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:10:58,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:10:58,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f4761f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58, skipping insertion in model container [2019-11-06 22:10:58,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,290 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:10:58,312 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:10:58,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:10:58,535 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:10:58,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:10:58,659 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:10:58,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58 WrapperNode [2019-11-06 22:10:58,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:10:58,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:10:58,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:10:58,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:10:58,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (1/1) ... [2019-11-06 22:10:58,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:10:58,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:10:58,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:10:58,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:10:58,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (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 [2019-11-06 22:10:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:10:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:10:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2019-11-06 22:10:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:10:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:10:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:10:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:10:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:10:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:10:59,087 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:10:59,089 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:10:59,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:59 BoogieIcfgContainer [2019-11-06 22:10:59,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:10:59,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:10:59,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:10:59,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:10:59,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:58" (1/3) ... [2019-11-06 22:10:59,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582fb100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:59, skipping insertion in model container [2019-11-06 22:10:59,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:58" (2/3) ... [2019-11-06 22:10:59,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582fb100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:59, skipping insertion in model container [2019-11-06 22:10:59,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:59" (3/3) ... [2019-11-06 22:10:59,100 INFO L109 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2019-11-06 22:10:59,113 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:10:59,123 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:10:59,134 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:10:59,160 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:10:59,160 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:10:59,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:10:59,160 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:10:59,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:10:59,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:10:59,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:10:59,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:10:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-06 22:10:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:10:59,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:10:59,184 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:10:59,186 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:10:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:10:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2019-11-06 22:10:59,197 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:10:59,197 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375170047] [2019-11-06 22:10:59,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:10:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:10:59,384 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375170047] [2019-11-06 22:10:59,385 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:10:59,385 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:10:59,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624819619] [2019-11-06 22:10:59,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:10:59,392 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:10:59,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:10:59,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:10:59,410 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2019-11-06 22:10:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:10:59,528 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2019-11-06 22:10:59,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:10:59,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-06 22:10:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:10:59,540 INFO L225 Difference]: With dead ends: 56 [2019-11-06 22:10:59,540 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 22:10:59,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:10:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 22:10:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 22:10:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:10:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-11-06 22:10:59,590 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 32 [2019-11-06 22:10:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:10:59,591 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-11-06 22:10:59,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:10:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-11-06 22:10:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:10:59,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:10:59,594 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:10:59,594 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:10:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:10:59,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2140793590, now seen corresponding path program 1 times [2019-11-06 22:10:59,595 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:10:59,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990023299] [2019-11-06 22:10:59,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:10:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 22:10:59,765 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990023299] [2019-11-06 22:10:59,765 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457502153] [2019-11-06 22:10:59,765 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 [2019-11-06 22:10:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:10:59,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 22:10:59,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:10:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:10:59,898 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:10:59,898 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-06 22:10:59,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718679174] [2019-11-06 22:10:59,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:10:59,901 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:10:59,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:10:59,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:10:59,902 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-11-06 22:10:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:10:59,918 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-11-06 22:10:59,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:10:59,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-06 22:10:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:10:59,920 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:10:59,920 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 22:10:59,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:10:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 22:10:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-06 22:10:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 22:10:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-06 22:10:59,929 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2019-11-06 22:10:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:10:59,930 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-06 22:10:59,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:10:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-06 22:10:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 22:10:59,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:10:59,932 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:00,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:00,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:00,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:00,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2099349144, now seen corresponding path program 1 times [2019-11-06 22:11:00,136 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:00,136 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52415841] [2019-11-06 22:11:00,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:11:00,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52415841] [2019-11-06 22:11:00,264 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016638005] [2019-11-06 22:11:00,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 22:11:00,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-06 22:11:00,343 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:11:00,344 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-11-06 22:11:00,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768785838] [2019-11-06 22:11:00,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:11:00,345 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:00,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:11:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:11:00,346 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2019-11-06 22:11:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:00,368 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2019-11-06 22:11:00,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:11:00,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-06 22:11:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:00,372 INFO L225 Difference]: With dead ends: 49 [2019-11-06 22:11:00,372 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:11:00,373 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:11:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:11:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-11-06 22:11:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-06 22:11:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-06 22:11:00,394 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2019-11-06 22:11:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:00,396 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-06 22:11:00,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:11:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-06 22:11:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 22:11:00,400 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:00,401 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-11-06 22:11:00,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:00,605 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:00,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1279819331, now seen corresponding path program 1 times [2019-11-06 22:11:00,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:00,606 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072205287] [2019-11-06 22:11:00,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:00,731 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072205287] [2019-11-06 22:11:00,731 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:11:00,731 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:11:00,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843478093] [2019-11-06 22:11:00,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:11:00,732 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:00,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:11:00,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:11:00,733 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-11-06 22:11:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:00,824 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-11-06 22:11:00,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:11:00,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-06 22:11:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:00,827 INFO L225 Difference]: With dead ends: 45 [2019-11-06 22:11:00,827 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:11:00,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:11:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:11:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-06 22:11:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-06 22:11:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-06 22:11:00,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 43 [2019-11-06 22:11:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:00,844 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-06 22:11:00,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:11:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-06 22:11:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-06 22:11:00,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:00,846 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-11-06 22:11:00,846 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1550635457, now seen corresponding path program 1 times [2019-11-06 22:11:00,848 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:00,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370366620] [2019-11-06 22:11:00,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:00,972 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370366620] [2019-11-06 22:11:00,972 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476277615] [2019-11-06 22:11:00,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:11:01,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:01,092 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:01,092 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-06 22:11:01,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469465042] [2019-11-06 22:11:01,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:11:01,093 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:01,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:11:01,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:11:01,095 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-11-06 22:11:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:01,177 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-06 22:11:01,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:11:01,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2019-11-06 22:11:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:01,179 INFO L225 Difference]: With dead ends: 54 [2019-11-06 22:11:01,179 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 22:11:01,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:11:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 22:11:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-06 22:11:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 22:11:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-06 22:11:01,186 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 45 [2019-11-06 22:11:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:01,186 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-06 22:11:01,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:11:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-06 22:11:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:11:01,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:01,188 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:01,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:01,392 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:01,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1356401117, now seen corresponding path program 2 times [2019-11-06 22:11:01,393 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:01,393 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873937419] [2019-11-06 22:11:01,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:01,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873937419] [2019-11-06 22:11:01,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918325884] [2019-11-06 22:11:01,485 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 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 [2019-11-06 22:11:01,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 22:11:01,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:01,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:11:01,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:01,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:01,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-06 22:11:01,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143144366] [2019-11-06 22:11:01,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:11:01,574 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:11:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:11:01,575 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-11-06 22:11:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:01,665 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-11-06 22:11:01,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:11:01,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-06 22:11:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:01,667 INFO L225 Difference]: With dead ends: 56 [2019-11-06 22:11:01,667 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 22:11:01,668 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:11:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 22:11:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-06 22:11:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 22:11:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-06 22:11:01,682 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 47 [2019-11-06 22:11:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:01,683 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-06 22:11:01,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:11:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-06 22:11:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 22:11:01,686 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:01,687 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-11-06 22:11:01,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:01,889 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:01,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1005160965, now seen corresponding path program 3 times [2019-11-06 22:11:01,890 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:01,890 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311445185] [2019-11-06 22:11:01,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:11:02,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311445185] [2019-11-06 22:11:02,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314436193] [2019-11-06 22:11:02,011 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 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 [2019-11-06 22:11:02,062 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-06 22:11:02,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:02,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:11:02,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-06 22:11:02,144 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:02,145 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-11-06 22:11:02,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742771146] [2019-11-06 22:11:02,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:11:02,146 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:11:02,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:11:02,146 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 9 states. [2019-11-06 22:11:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:02,313 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-06 22:11:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:11:02,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2019-11-06 22:11:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:02,314 INFO L225 Difference]: With dead ends: 63 [2019-11-06 22:11:02,315 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 22:11:02,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:11:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 22:11:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-11-06 22:11:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-06 22:11:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-06 22:11:02,325 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 49 [2019-11-06 22:11:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:02,325 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-06 22:11:02,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:11:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-06 22:11:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:11:02,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:02,328 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:02,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:02,533 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash 742022364, now seen corresponding path program 4 times [2019-11-06 22:11:02,533 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:02,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459684144] [2019-11-06 22:11:02,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-06 22:11:02,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459684144] [2019-11-06 22:11:02,662 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178741395] [2019-11-06 22:11:02,662 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 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 [2019-11-06 22:11:02,732 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-06 22:11:02,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:02,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:11:02,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-06 22:11:02,791 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:02,791 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-11-06 22:11:02,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47139801] [2019-11-06 22:11:02,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:11:02,792 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:11:02,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:11:02,799 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 11 states. [2019-11-06 22:11:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:03,017 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2019-11-06 22:11:03,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:11:03,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2019-11-06 22:11:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:03,019 INFO L225 Difference]: With dead ends: 70 [2019-11-06 22:11:03,019 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 22:11:03,019 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:11:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 22:11:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-11-06 22:11:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:11:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-11-06 22:11:03,028 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 60 [2019-11-06 22:11:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:03,032 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-11-06 22:11:03,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:11:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-11-06 22:11:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:11:03,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:03,033 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:03,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:03,238 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash -535819369, now seen corresponding path program 5 times [2019-11-06 22:11:03,239 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:03,239 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013356026] [2019-11-06 22:11:03,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-11-06 22:11:03,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013356026] [2019-11-06 22:11:03,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496380448] [2019-11-06 22:11:03,357 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 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 [2019-11-06 22:11:03,452 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-06 22:11:03,452 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:03,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:11:03,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-11-06 22:11:03,475 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:03,475 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2019-11-06 22:11:03,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030189644] [2019-11-06 22:11:03,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:11:03,476 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:11:03,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:11:03,477 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2019-11-06 22:11:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:03,616 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2019-11-06 22:11:03,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:11:03,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2019-11-06 22:11:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:03,617 INFO L225 Difference]: With dead ends: 75 [2019-11-06 22:11:03,618 INFO L226 Difference]: Without dead ends: 49 [2019-11-06 22:11:03,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:11:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-06 22:11:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2019-11-06 22:11:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-06 22:11:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-11-06 22:11:03,630 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2019-11-06 22:11:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:03,630 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-11-06 22:11:03,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:11:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-11-06 22:11:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-06 22:11:03,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:03,632 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:03,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:03,833 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:03,834 INFO L82 PathProgramCache]: Analyzing trace with hash -174901602, now seen corresponding path program 6 times [2019-11-06 22:11:03,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:03,834 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138073681] [2019-11-06 22:11:03,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-11-06 22:11:03,998 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138073681] [2019-11-06 22:11:03,999 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001456404] [2019-11-06 22:11:03,999 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 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 [2019-11-06 22:11:04,079 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-06 22:11:04,079 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:04,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:11:04,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2019-11-06 22:11:04,136 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:04,136 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2019-11-06 22:11:04,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213733288] [2019-11-06 22:11:04,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:11:04,137 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:04,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:11:04,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:11:04,137 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 10 states. [2019-11-06 22:11:04,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:04,305 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2019-11-06 22:11:04,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:11:04,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2019-11-06 22:11:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:04,307 INFO L225 Difference]: With dead ends: 82 [2019-11-06 22:11:04,307 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 22:11:04,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:11:04,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 22:11:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-06 22:11:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-06 22:11:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2019-11-06 22:11:04,314 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 80 [2019-11-06 22:11:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:04,314 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2019-11-06 22:11:04,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:11:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2019-11-06 22:11:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-06 22:11:04,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:04,316 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:04,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:04,525 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:04,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1544076679, now seen corresponding path program 7 times [2019-11-06 22:11:04,526 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:04,526 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541764256] [2019-11-06 22:11:04,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-11-06 22:11:04,646 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541764256] [2019-11-06 22:11:04,646 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516782507] [2019-11-06 22:11:04,646 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 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 [2019-11-06 22:11:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:04,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:11:04,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-11-06 22:11:04,741 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:04,741 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-06 22:11:04,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709008930] [2019-11-06 22:11:04,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:11:04,743 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:11:04,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:11:04,743 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 7 states. [2019-11-06 22:11:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:04,808 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2019-11-06 22:11:04,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:11:04,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2019-11-06 22:11:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:04,809 INFO L225 Difference]: With dead ends: 81 [2019-11-06 22:11:04,809 INFO L226 Difference]: Without dead ends: 55 [2019-11-06 22:11:04,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:11:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-06 22:11:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-11-06 22:11:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-06 22:11:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2019-11-06 22:11:04,820 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 91 [2019-11-06 22:11:04,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:04,825 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2019-11-06 22:11:04,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:11:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2019-11-06 22:11:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 22:11:04,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:04,826 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 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, 1] [2019-11-06 22:11:05,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:05,033 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash -513954565, now seen corresponding path program 8 times [2019-11-06 22:11:05,034 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:05,034 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584732308] [2019-11-06 22:11:05,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-11-06 22:11:05,161 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584732308] [2019-11-06 22:11:05,162 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786989711] [2019-11-06 22:11:05,162 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:05,258 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 22:11:05,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:05,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:11:05,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-11-06 22:11:05,300 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:05,301 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-06 22:11:05,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770467731] [2019-11-06 22:11:05,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:11:05,308 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:05,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:11:05,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:11:05,309 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2019-11-06 22:11:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:05,429 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2019-11-06 22:11:05,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:11:05,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-11-06 22:11:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:05,430 INFO L225 Difference]: With dead ends: 82 [2019-11-06 22:11:05,431 INFO L226 Difference]: Without dead ends: 56 [2019-11-06 22:11:05,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:11:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-06 22:11:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-06 22:11:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-06 22:11:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2019-11-06 22:11:05,442 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 93 [2019-11-06 22:11:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:05,443 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2019-11-06 22:11:05,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:11:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2019-11-06 22:11:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:11:05,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:05,446 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:05,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:05,653 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1590918909, now seen corresponding path program 9 times [2019-11-06 22:11:05,654 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:05,654 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924394627] [2019-11-06 22:11:05,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-11-06 22:11:06,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924394627] [2019-11-06 22:11:06,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457964262] [2019-11-06 22:11:06,578 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:06,771 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-11-06 22:11:06,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:06,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 55 conjunts are in the unsatisfiable core [2019-11-06 22:11:06,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:06,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:06,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:06,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-06 22:11:07,080 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:07,080 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 19 [2019-11-06 22:11:07,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330249461] [2019-11-06 22:11:07,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 22:11:07,081 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 22:11:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:11:07,082 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 19 states. [2019-11-06 22:11:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:07,882 INFO L93 Difference]: Finished difference Result 151 states and 209 transitions. [2019-11-06 22:11:07,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:11:07,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 95 [2019-11-06 22:11:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:07,887 INFO L225 Difference]: With dead ends: 151 [2019-11-06 22:11:07,887 INFO L226 Difference]: Without dead ends: 147 [2019-11-06 22:11:07,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:11:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-06 22:11:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2019-11-06 22:11:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-06 22:11:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2019-11-06 22:11:07,916 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 95 [2019-11-06 22:11:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:07,916 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2019-11-06 22:11:07,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-06 22:11:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2019-11-06 22:11:07,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:11:07,918 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:07,918 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:08,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:08,123 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:08,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2023990017, now seen corresponding path program 1 times [2019-11-06 22:11:08,124 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:08,124 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686720993] [2019-11-06 22:11:08,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 89 proven. 264 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-06 22:11:08,990 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686720993] [2019-11-06 22:11:08,991 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163864845] [2019-11-06 22:11:08,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:09,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 72 conjunts are in the unsatisfiable core [2019-11-06 22:11:09,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:09,147 INFO L375 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 [2019-11-06 22:11:09,148 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,161 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:09,162 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,162 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:3 [2019-11-06 22:11:09,409 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:09,410 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2019-11-06 22:11:09,412 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,421 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:09,422 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,422 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:19 [2019-11-06 22:11:09,565 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-06 22:11:09,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,571 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:09,572 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,572 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:11 [2019-11-06 22:11:09,582 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-06 22:11:09,582 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:09,589 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:09,589 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2019-11-06 22:11:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 7 proven. 362 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-06 22:11:10,161 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:10,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 38 [2019-11-06 22:11:10,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704837123] [2019-11-06 22:11:10,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-06 22:11:10,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:10,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-06 22:11:10,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1296, Unknown=0, NotChecked=0, Total=1406 [2019-11-06 22:11:10,164 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand 38 states. [2019-11-06 22:11:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:16,087 INFO L93 Difference]: Finished difference Result 638 states and 903 transitions. [2019-11-06 22:11:16,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-11-06 22:11:16,087 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 95 [2019-11-06 22:11:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:16,092 INFO L225 Difference]: With dead ends: 638 [2019-11-06 22:11:16,092 INFO L226 Difference]: Without dead ends: 575 [2019-11-06 22:11:16,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2741 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=675, Invalid=8445, Unknown=0, NotChecked=0, Total=9120 [2019-11-06 22:11:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2019-11-06 22:11:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 310. [2019-11-06 22:11:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2019-11-06 22:11:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 417 transitions. [2019-11-06 22:11:16,143 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 417 transitions. Word has length 95 [2019-11-06 22:11:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:16,143 INFO L462 AbstractCegarLoop]: Abstraction has 310 states and 417 transitions. [2019-11-06 22:11:16,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-06 22:11:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 417 transitions. [2019-11-06 22:11:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:11:16,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:16,146 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:16,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:16,350 INFO L410 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1849084347, now seen corresponding path program 2 times [2019-11-06 22:11:16,351 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:16,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818744960] [2019-11-06 22:11:16,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 91 proven. 277 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-06 22:11:17,723 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818744960] [2019-11-06 22:11:17,723 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972984392] [2019-11-06 22:11:17,724 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:17,830 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 22:11:17,830 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:17,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 69 conjunts are in the unsatisfiable core [2019-11-06 22:11:17,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:17,851 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:17,854 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2019-11-06 22:11:17,854 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:17,859 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:17,860 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:17,860 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2019-11-06 22:11:18,033 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2019-11-06 22:11:18,039 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,047 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,060 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,070 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2019-11-06 22:11:18,071 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,083 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,084 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,105 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,105 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,106 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:82, output treesize:46 [2019-11-06 22:11:18,351 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,353 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 22:11:18,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,364 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,364 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 59 [2019-11-06 22:11:18,365 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,384 INFO L567 ElimStorePlain]: treesize reduction 18, result has 71.9 percent of original size [2019-11-06 22:11:18,385 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,385 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:46 [2019-11-06 22:11:18,505 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,507 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 22:11:18,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,511 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,514 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,515 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 61 [2019-11-06 22:11:18,516 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,533 INFO L567 ElimStorePlain]: treesize reduction 17, result has 72.1 percent of original size [2019-11-06 22:11:18,533 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,534 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:44 [2019-11-06 22:11:18,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,652 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,652 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 38 [2019-11-06 22:11:18,653 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,659 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,660 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,660 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-06 22:11:18,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:18,715 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,715 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 29 [2019-11-06 22:11:18,716 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,723 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:18,725 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:18,725 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:23 [2019-11-06 22:11:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 190 proven. 188 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-06 22:11:19,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:11:19,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 32] total 42 [2019-11-06 22:11:19,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165788583] [2019-11-06 22:11:19,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-06 22:11:19,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:11:19,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-06 22:11:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2019-11-06 22:11:19,359 INFO L87 Difference]: Start difference. First operand 310 states and 417 transitions. Second operand 42 states. [2019-11-06 22:11:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:11:24,891 INFO L93 Difference]: Finished difference Result 1439 states and 2060 transitions. [2019-11-06 22:11:24,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-11-06 22:11:24,892 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 95 [2019-11-06 22:11:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:11:24,903 INFO L225 Difference]: With dead ends: 1439 [2019-11-06 22:11:24,903 INFO L226 Difference]: Without dead ends: 1041 [2019-11-06 22:11:24,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=524, Invalid=6448, Unknown=0, NotChecked=0, Total=6972 [2019-11-06 22:11:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-11-06 22:11:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 677. [2019-11-06 22:11:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2019-11-06 22:11:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 932 transitions. [2019-11-06 22:11:25,004 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 932 transitions. Word has length 95 [2019-11-06 22:11:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:11:25,004 INFO L462 AbstractCegarLoop]: Abstraction has 677 states and 932 transitions. [2019-11-06 22:11:25,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-06 22:11:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 932 transitions. [2019-11-06 22:11:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:11:25,009 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:11:25,009 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:11:25,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:25,217 INFO L410 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:11:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:11:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash 311055231, now seen corresponding path program 3 times [2019-11-06 22:11:25,217 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:11:25,218 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851013760] [2019-11-06 22:11:25,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:11:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:11:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 91 proven. 279 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-06 22:11:26,556 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851013760] [2019-11-06 22:11:26,560 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189086591] [2019-11-06 22:11:26,560 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:11:26,761 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-06 22:11:26,762 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 22:11:26,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 58 conjunts are in the unsatisfiable core [2019-11-06 22:11:26,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:11:26,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:26,779 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2019-11-06 22:11:26,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:26,785 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:26,785 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:26,786 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2019-11-06 22:11:27,174 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2019-11-06 22:11:27,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,190 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,199 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,201 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2019-11-06 22:11:27,201 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:27,210 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:27,210 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:27,223 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:27,223 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:11:27,224 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:68, output treesize:46 [2019-11-06 22:11:27,382 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,383 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,384 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,387 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,390 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,393 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:11:27,429 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:11:27,430 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 64 treesize of output 176 [2019-11-06 22:11:27,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:27,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:27,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:27,433 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:11:27,540 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2019-11-06 22:11:27,541 INFO L567 ElimStorePlain]: treesize reduction 247, result has 25.4 percent of original size [2019-11-06 22:11:27,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:27,544 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 22:11:27,544 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:84 [2019-11-06 22:11:27,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:11:37,632 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 40 [2019-11-06 22:11:37,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms