/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:47,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:47,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:48,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:48,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:48,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:48,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:48,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:48,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:48,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:48,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:48,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:48,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:48,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:48,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:48,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:48,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:48,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:48,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:48,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:48,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:48,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:48,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:48,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:48,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:48,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:48,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:48,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:48,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:48,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:48,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:48,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:48,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:48,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:48,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:48,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:48,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:48,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:48,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:48,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:48,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:48,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:58:48,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:48,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:48,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:48,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:48,094 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:48,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:48,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:48,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:48,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:48,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:48,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:48,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:48,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:48,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:48,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:48,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:48,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:48,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:48,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:48,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:48,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:48,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:48,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:48,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:48,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:58:48,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:48,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:48,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:48,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:48,618 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:48,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-24 15:58:48,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33de3cf7/54e1a03e6b48470b8d02ab25617d26dc/FLAG668ff0624 [2020-09-24 15:58:49,270 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:49,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-24 15:58:49,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33de3cf7/54e1a03e6b48470b8d02ab25617d26dc/FLAG668ff0624 [2020-09-24 15:58:49,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33de3cf7/54e1a03e6b48470b8d02ab25617d26dc [2020-09-24 15:58:49,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:49,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:49,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:49,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:49,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:49,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:49,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5352a789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49, skipping insertion in model container [2020-09-24 15:58:49,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:49,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:49,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:49,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:49,909 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:49,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:49,957 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:49,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49 WrapperNode [2020-09-24 15:58:49,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:49,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:49,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:49,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:49,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:49,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:49,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:49,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:50,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:50,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:50,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... [2020-09-24 15:58:50,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:50,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:50,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:50,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:50,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 15:58:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:58:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 15:58:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:50,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:50,359 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:50,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:50 BoogieIcfgContainer [2020-09-24 15:58:50,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:50,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:50,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:50,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:50,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:49" (1/3) ... [2020-09-24 15:58:50,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbeca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:50, skipping insertion in model container [2020-09-24 15:58:50,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:49" (2/3) ... [2020-09-24 15:58:50,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbeca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:50, skipping insertion in model container [2020-09-24 15:58:50,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:50" (3/3) ... [2020-09-24 15:58:50,375 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-09-24 15:58:50,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:50,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:50,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:50,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:50,516 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:50,516 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:50,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:50,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:50,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:50,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:50,517 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 15:58:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:50,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:50,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:50,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:50,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:50,563 INFO L82 PathProgramCache]: Analyzing trace with hash -588914908, now seen corresponding path program 1 times [2020-09-24 15:58:50,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:50,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27862950] [2020-09-24 15:58:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,809 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,810 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:58:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:58:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,923 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,923 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,925 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:50,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:58:50,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:50,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27862950] [2020-09-24 15:58:50,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:50,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:50,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110416752] [2020-09-24 15:58:51,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:51,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:51,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:51,026 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-24 15:58:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:51,133 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-09-24 15:58:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:58:51,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:51,149 INFO L225 Difference]: With dead ends: 46 [2020-09-24 15:58:51,149 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 15:58:51,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 15:58:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 15:58:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 15:58:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 15:58:51,214 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-09-24 15:58:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:51,214 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 15:58:51,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 15:58:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 15:58:51,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:51,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:51,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:51,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:51,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1852809946, now seen corresponding path program 1 times [2020-09-24 15:58:51,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:51,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929321977] [2020-09-24 15:58:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,256 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:51,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 15:58:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:51,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:51,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,318 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,319 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,319 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,412 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,412 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,412 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,413 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:51,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:51,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:51,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929321977] [2020-09-24 15:58:51,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:51,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:58:51,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067676210] [2020-09-24 15:58:51,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:58:51,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:58:51,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:58:51,472 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2020-09-24 15:58:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:51,574 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-09-24 15:58:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:58:51,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 15:58:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:51,576 INFO L225 Difference]: With dead ends: 45 [2020-09-24 15:58:51,577 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 15:58:51,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:58:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 15:58:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-24 15:58:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 15:58:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-24 15:58:51,591 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2020-09-24 15:58:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:51,591 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-24 15:58:51,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:58:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-24 15:58:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 15:58:51,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:51,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:51,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:51,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:51,595 INFO L82 PathProgramCache]: Analyzing trace with hash -238705980, now seen corresponding path program 1 times [2020-09-24 15:58:51,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:51,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231329372] [2020-09-24 15:58:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,632 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 15:58:51,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:58:51,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 15:58:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:58:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,686 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,686 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:51,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:51,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:51,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:51,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:51,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:58:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 15:58:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:51,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,855 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,856 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,856 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:51,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:51,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231329372] [2020-09-24 15:58:51,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:51,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:58:51,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580265498] [2020-09-24 15:58:51,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:51,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:51,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:51,882 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 8 states. [2020-09-24 15:58:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:51,981 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-24 15:58:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:58:51,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-24 15:58:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:51,983 INFO L225 Difference]: With dead ends: 55 [2020-09-24 15:58:51,984 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:51,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-09-24 15:58:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 15:58:51,994 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2020-09-24 15:58:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:51,995 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 15:58:51,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 15:58:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 15:58:51,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:51,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:51,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:51,997 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2006293766, now seen corresponding path program 1 times [2020-09-24 15:58:51,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:51,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439482933] [2020-09-24 15:58:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,045 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,046 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:52,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:58:52,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 15:58:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,092 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,092 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,093 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:52,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:52,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 15:58:52,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 15:58:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:58:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:52,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:58:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:52,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:58:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,366 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,367 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,367 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:52,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 15:58:52,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439482933] [2020-09-24 15:58:52,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:52,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 15:58:52,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839689645] [2020-09-24 15:58:52,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:58:52,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:52,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:58:52,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:58:52,394 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 9 states. [2020-09-24 15:58:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:52,497 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-09-24 15:58:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:58:52,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-24 15:58:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:52,499 INFO L225 Difference]: With dead ends: 65 [2020-09-24 15:58:52,500 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 15:58:52,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:58:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 15:58:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-09-24 15:58:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-24 15:58:52,509 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-09-24 15:58:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:52,510 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-24 15:58:52,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:58:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-24 15:58:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 15:58:52,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:52,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:52,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:52,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash 940355172, now seen corresponding path program 2 times [2020-09-24 15:58:52,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:52,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905614509] [2020-09-24 15:58:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,553 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,553 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 15:58:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:58:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 15:58:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,574 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,574 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,574 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:52,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:52,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:52,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:58:52,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 15:58:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,665 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,666 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:52,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:52,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:58:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:58:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,716 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:52,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:52,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,763 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,764 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,764 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:52,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:52,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:52,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 15:58:52,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905614509] [2020-09-24 15:58:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:52,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:58:52,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471898589] [2020-09-24 15:58:52,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:58:52,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:58:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:58:52,866 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 12 states. [2020-09-24 15:58:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:53,010 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-09-24 15:58:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:53,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-09-24 15:58:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:53,012 INFO L225 Difference]: With dead ends: 75 [2020-09-24 15:58:53,012 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 15:58:53,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:58:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 15:58:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-09-24 15:58:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 15:58:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-24 15:58:53,022 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2020-09-24 15:58:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:53,022 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-24 15:58:53,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:58:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-24 15:58:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 15:58:53,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:53,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:53,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:53,025 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash 826985242, now seen corresponding path program 2 times [2020-09-24 15:58:53,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:53,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221118660] [2020-09-24 15:58:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,065 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 15:58:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:58:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:58:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 15:58:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 15:58:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,151 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:58:53,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:58:53,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 15:58:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,231 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:53,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:58:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:58:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 15:58:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,293 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,294 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,294 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:53,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:53,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,351 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:53,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 15:58:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,409 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,409 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:53,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 15:58:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,467 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:58:53,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221118660] [2020-09-24 15:58:53,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:53,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 15:58:53,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137563452] [2020-09-24 15:58:53,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 15:58:53,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:53,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 15:58:53,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:58:53,508 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 15 states. [2020-09-24 15:58:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:53,791 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-09-24 15:58:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 15:58:53,792 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 15:58:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:53,793 INFO L225 Difference]: With dead ends: 85 [2020-09-24 15:58:53,794 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 15:58:53,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 15:58:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2020-09-24 15:58:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 15:58:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-09-24 15:58:53,818 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 56 [2020-09-24 15:58:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:53,819 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-09-24 15:58:53,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 15:58:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-09-24 15:58:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 15:58:53,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:53,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:53,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:53,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash -996081148, now seen corresponding path program 3 times [2020-09-24 15:58:53,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:53,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187180696] [2020-09-24 15:58:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,865 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,865 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,865 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:58:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:58:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,907 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,969 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,969 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,969 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:58:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 15:58:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:58:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 15:58:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:58:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:58:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:54,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:58:54,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:58:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,243 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,243 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:54,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,277 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,278 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,278 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,314 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 15:58:54,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187180696] [2020-09-24 15:58:54,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:54,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:54,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233520684] [2020-09-24 15:58:54,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:54,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:54,348 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 14 states. [2020-09-24 15:58:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:54,638 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2020-09-24 15:58:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:58:54,639 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-09-24 15:58:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:54,640 INFO L225 Difference]: With dead ends: 156 [2020-09-24 15:58:54,641 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 15:58:54,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 15:58:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2020-09-24 15:58:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 15:58:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 15:58:54,652 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 64 [2020-09-24 15:58:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:54,652 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 15:58:54,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 15:58:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 15:58:54,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:54,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:54,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:54,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:54,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1686185158, now seen corresponding path program 3 times [2020-09-24 15:58:54,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:54,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782607919] [2020-09-24 15:58:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 15:58:54,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 15:58:54,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:58:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:58:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,791 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,792 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:58:54,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 15:58:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:58:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 15:58:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,868 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,869 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:58:54,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:58:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:58:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:58:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,937 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,937 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:58:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 15:58:54,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:58:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:58:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:55,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:58:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:58:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:55,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:58:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:55,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:55,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:55,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:55,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:55,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 15:58:55,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782607919] [2020-09-24 15:58:55,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:55,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 15:58:55,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927517156] [2020-09-24 15:58:55,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 15:58:55,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:55,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 15:58:55,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:58:55,212 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2020-09-24 15:58:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:55,562 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-09-24 15:58:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:58:55,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-24 15:58:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:55,564 INFO L225 Difference]: With dead ends: 101 [2020-09-24 15:58:55,564 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:58:55,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:58:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:58:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:58:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:58:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:58:55,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-24 15:58:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:55,567 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:58:55,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 15:58:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:58:55,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:58:55,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:58:55,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:58:55,727 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:58:55,727 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:55,728 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= id2_~x |id2_#in~x|) [2020-09-24 15:58:55,728 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 15:58:55,728 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 15:58:55,728 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 15:58:55,728 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 15:58:55,728 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 15:58:55,729 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2020-09-24 15:58:55,729 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2020-09-24 15:58:55,729 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2020-09-24 15:58:55,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:55,729 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:58:55,729 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:58:55,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:58:55,730 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-09-24 15:58:55,730 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2020-09-24 15:58:55,730 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2020-09-24 15:58:55,730 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 15:58:55,730 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-24 15:58:55,730 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 5 main_~input~0) [2020-09-24 15:58:55,731 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 15:58:55,731 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-09-24 15:58:55,731 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 15:58:55,731 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-24 15:58:55,731 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 15:58:55,750 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 15:58:55,751 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-09-24 15:58:55,751 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:58:55,751 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 15:58:55,751 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 15:58:55,752 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 15:58:55,752 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 15:58:55,752 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-24 15:58:55,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:55 BoogieIcfgContainer [2020-09-24 15:58:55,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:55,784 INFO L168 Benchmark]: Toolchain (without parser) took 6148.43 ms. Allocated memory was 139.5 MB in the beginning and 284.7 MB in the end (delta: 145.2 MB). Free memory was 103.4 MB in the beginning and 255.9 MB in the end (delta: -152.4 MB). Peak memory consumption was 152.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:55,785 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:58:55,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.31 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:55,787 INFO L168 Benchmark]: Boogie Preprocessor took 111.52 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:55,789 INFO L168 Benchmark]: RCFGBuilder took 294.86 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:55,790 INFO L168 Benchmark]: TraceAbstraction took 5407.60 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 168.2 MB in the beginning and 255.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 154.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:55,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.31 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.52 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.86 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5407.60 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 168.2 MB in the beginning and 255.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 154.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 223 SDslu, 1642 SDs, 0 SdLazy, 841 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 90 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 21 NumberOfFragments, 15 HoareAnnotationTreeSize, 21 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 127 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 51884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 151/224 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...