/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:27,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:27,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:27,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:27,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:27,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:27,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:27,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:27,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:27,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:27,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:27,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:27,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:27,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:27,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:27,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:27,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:27,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:27,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:27,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:27,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:27,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:27,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:27,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:27,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:27,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:27,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:27,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:27,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:27,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:27,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:27,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:27,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:27,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:27,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:27,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:27,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:27,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:27,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:27,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:27,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:27,162 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 [2020-09-25 03:10:27,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:27,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:27,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:27,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:27,200 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:27,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:27,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:27,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:27,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:27,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:27,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:27,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:27,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:27,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:27,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:27,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:27,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:27,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:27,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:27,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:27,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:27,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:27,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:27,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:27,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:27,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:27,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:27,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:27,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:27,207 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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:10:27,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:27,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:27,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:27,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:27,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:27,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-25 03:10:27,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d099f79a/78a2e85291694a73a0279db82390a239/FLAG9a94140a3 [2020-09-25 03:10:28,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:28,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-25 03:10:28,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d099f79a/78a2e85291694a73a0279db82390a239/FLAG9a94140a3 [2020-09-25 03:10:28,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d099f79a/78a2e85291694a73a0279db82390a239 [2020-09-25 03:10:28,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:28,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:28,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:28,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:28,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:28,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:28" (1/1) ... [2020-09-25 03:10:28,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:28, skipping insertion in model container [2020-09-25 03:10:28,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:28" (1/1) ... [2020-09-25 03:10:28,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:28,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:28,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:28,961 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:28,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:29,001 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:29,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29 WrapperNode [2020-09-25 03:10:29,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:29,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:29,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:29,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:29,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:29,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:29,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:29,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:29,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (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 [2020-09-25 03:10:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:29,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:29,448 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:29,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:29 BoogieIcfgContainer [2020-09-25 03:10:29,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:29,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:29,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:29,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:29,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:28" (1/3) ... [2020-09-25 03:10:29,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:29, skipping insertion in model container [2020-09-25 03:10:29,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (2/3) ... [2020-09-25 03:10:29,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:29, skipping insertion in model container [2020-09-25 03:10:29,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:29" (3/3) ... [2020-09-25 03:10:29,463 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-09-25 03:10:29,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:29,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:29,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:29,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:29,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:29,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:29,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:29,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:29,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:29,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:29,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:29,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:29,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:29,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:29,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:29,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:30,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 03:10:30,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:10:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 03:10:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:30,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:30,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:30,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:30,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:30,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:30,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632626389] [2020-09-25 03:10:30,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:30,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:30,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:30,175 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:30,278 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:30,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:30,294 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:30,294 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:30,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:30,359 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:30,360 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:30,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:30,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:30,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:30,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:30,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:30,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:30,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950237946] [2020-09-25 03:10:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:10:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:10:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:30,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950237946] [2020-09-25 03:10:30,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:30,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:30,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824210414] [2020-09-25 03:10:30,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:30,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:30,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:30,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:30,603 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:30,649 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:30,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:30,654 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:30,654 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:30,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:30,676 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:30,679 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:30,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:30,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:30,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-25 03:10:30,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:30,685 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:30,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:30,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079841503] [2020-09-25 03:10:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-09-25 03:10:32,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:32,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:32,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 03:10:33,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:10:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:10:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 03:10:33,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079841503] [2020-09-25 03:10:33,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:33,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:33,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526275285] [2020-09-25 03:10:33,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:33,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:33,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:33,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:33,189 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 03:10:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:33,326 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 03:10:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:33,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 03:10:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:33,332 INFO L225 Difference]: With dead ends: 63 [2020-09-25 03:10:33,332 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:10:33,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:10:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 03:10:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:33,356 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 03:10:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:33,357 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:33,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:33,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:33,360 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, 1, 1] [2020-09-25 03:10:33,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:33,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 03:10:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:33,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688462735] [2020-09-25 03:10:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-09-25 03:10:36,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:36,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-25 03:10:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:37,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:10:37,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:10:37,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688462735] [2020-09-25 03:10:37,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:37,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:37,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931868365] [2020-09-25 03:10:37,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:37,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:37,562 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 03:10:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:37,701 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 03:10:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:37,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 03:10:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:37,706 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:10:37,706 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 03:10:37,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 03:10:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2020-09-25 03:10:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:10:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 03:10:37,729 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 03:10:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:37,730 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 03:10:37,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 03:10:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:37,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:37,735 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, 1, 1] [2020-09-25 03:10:37,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:37,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 03:10:37,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:37,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135254897] [2020-09-25 03:10:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:38,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-25 03:10:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 03:10:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:38,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:38,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:38,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:38,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135254897] [2020-09-25 03:10:38,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:38,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:38,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872788529] [2020-09-25 03:10:38,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:38,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:38,924 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 03:10:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:39,029 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 03:10:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:39,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:10:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:39,032 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:10:39,032 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:39,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:39,042 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2020-09-25 03:10:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:39,042 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:39,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:39,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:39,044 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 03:10:39,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:39,045 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:39,045 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:39,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:39,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519934546] [2020-09-25 03:10:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-09-25 03:10:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:40,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:40,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:40,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:41,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 03:10:41,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:41,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:10:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:10:41,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519934546] [2020-09-25 03:10:41,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:41,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:41,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968413698] [2020-09-25 03:10:41,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:41,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:41,132 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 03:10:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:41,223 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-09-25 03:10:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:41,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:10:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:41,225 INFO L225 Difference]: With dead ends: 78 [2020-09-25 03:10:41,225 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 03:10:41,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 03:10:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-25 03:10:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 03:10:41,245 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 03:10:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:41,246 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 03:10:41,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 03:10:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:41,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:41,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:41,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:41,257 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 03:10:41,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:41,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354908790] [2020-09-25 03:10:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:46,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-09-25 03:10:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:10:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:47,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:47,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:48,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 03:10:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:48,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:48,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:10:48,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:48,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354908790] [2020-09-25 03:10:48,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:48,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:48,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134108244] [2020-09-25 03:10:48,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:48,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:48,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:48,188 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 13 states. [2020-09-25 03:10:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:48,367 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2020-09-25 03:10:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:48,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-09-25 03:10:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:48,369 INFO L225 Difference]: With dead ends: 92 [2020-09-25 03:10:48,369 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 03:10:48,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 03:10:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-09-25 03:10:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 03:10:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2020-09-25 03:10:48,382 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 51 [2020-09-25 03:10:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:48,382 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2020-09-25 03:10:48,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2020-09-25 03:10:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:48,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:48,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:48,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:48,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:48,385 INFO L82 PathProgramCache]: Analyzing trace with hash -991775051, now seen corresponding path program 1 times [2020-09-25 03:10:48,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:48,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338885776] [2020-09-25 03:10:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:53,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:53,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3736 [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:57,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:57,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338885776] [2020-09-25 03:10:57,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:57,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:57,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143952430] [2020-09-25 03:10:57,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:57,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:57,881 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand 13 states. [2020-09-25 03:10:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:58,142 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2020-09-25 03:10:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:10:58,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:10:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:58,145 INFO L225 Difference]: With dead ends: 102 [2020-09-25 03:10:58,148 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 03:10:58,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:10:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 03:10:58,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 64. [2020-09-25 03:10:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 03:10:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-25 03:10:58,172 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 52 [2020-09-25 03:10:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:58,173 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-25 03:10:58,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:58,173 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-25 03:10:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:58,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:58,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:58,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:58,176 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:58,176 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 2 times [2020-09-25 03:10:58,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:58,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317026426] [2020-09-25 03:10:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:11:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:11:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:03,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:04,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:11:04,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317026426] [2020-09-25 03:11:04,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:04,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:11:04,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135216497] [2020-09-25 03:11:04,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:11:04,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:11:04,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:11:04,407 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 13 states. [2020-09-25 03:11:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:04,628 INFO L93 Difference]: Finished difference Result 112 states and 164 transitions. [2020-09-25 03:11:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:11:04,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:11:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:04,635 INFO L225 Difference]: With dead ends: 112 [2020-09-25 03:11:04,635 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 03:11:04,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:11:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 03:11:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-09-25 03:11:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 03:11:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2020-09-25 03:11:04,652 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 52 [2020-09-25 03:11:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:04,652 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2020-09-25 03:11:04,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:11:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2020-09-25 03:11:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:11:04,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:04,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:04,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:11:04,655 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1855729211, now seen corresponding path program 1 times [2020-09-25 03:11:04,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:04,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546582131] [2020-09-25 03:11:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:11:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:11:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:11:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:11:13,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4159 [2020-09-25 03:11:13,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:13,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:14,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:14,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:14,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:14,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:11:14,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546582131] [2020-09-25 03:11:14,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:14,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:11:14,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717529260] [2020-09-25 03:11:14,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:11:14,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:11:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:11:14,439 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand 13 states. [2020-09-25 03:11:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:14,606 INFO L93 Difference]: Finished difference Result 120 states and 184 transitions. [2020-09-25 03:11:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:11:14,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-09-25 03:11:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:14,610 INFO L225 Difference]: With dead ends: 120 [2020-09-25 03:11:14,610 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 03:11:14,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:11:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 03:11:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 92. [2020-09-25 03:11:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 03:11:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 150 transitions. [2020-09-25 03:11:14,624 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 150 transitions. Word has length 53 [2020-09-25 03:11:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:14,624 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 150 transitions. [2020-09-25 03:11:14,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:11:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 150 transitions. [2020-09-25 03:11:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:11:14,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:14,627 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:14,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:11:14,627 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:14,628 INFO L82 PathProgramCache]: Analyzing trace with hash 698933285, now seen corresponding path program 1 times [2020-09-25 03:11:14,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:14,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258133789] [2020-09-25 03:11:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:11:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:19,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:11:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:24,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2356 [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:11:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:27,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:27,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 03:11:27,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258133789] [2020-09-25 03:11:27,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:27,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:11:27,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722708020] [2020-09-25 03:11:27,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:11:27,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:11:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:11:27,321 INFO L87 Difference]: Start difference. First operand 92 states and 150 transitions. Second operand 10 states.