/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=BIGGEST --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/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:26:04,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:26:04,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:26:04,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:26:04,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:26:04,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:26:04,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:26:04,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:26:04,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:26:04,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:26:04,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:26:04,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:26:04,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:26:04,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:26:04,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:26:04,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:26:04,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:26:04,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:26:04,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:26:04,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:26:04,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:26:04,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:26:04,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:26:04,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:26:04,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:26:04,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:26:04,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:26:04,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:26:04,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:26:04,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:26:04,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:26:04,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:26:04,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:26:04,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:26:04,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:26:04,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:26:04,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:26:04,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:26:04,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:26:04,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:26:04,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:26:04,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:26:04,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:26:04,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:26:04,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:26:04,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:26:04,999 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:26:04,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:26:04,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:26:05,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:26:05,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:26:05,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:26:05,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:26:05,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:26:05,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:26:05,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:26:05,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:26:05,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:26:05,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:26:05,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:26:05,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:26:05,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:26:05,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:26:05,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:26:05,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:26:05,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:26:05,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:26:05,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:26:05,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:26:05,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:26:05,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:26:05,004 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:26:05,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:26:05,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:26:05,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:26:05,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:26:05,512 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:26:05,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-24 20:26:05,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba5ff6657/ca109a6ce82b424b8c967c593bf7fd38/FLAG769a7152e [2020-09-24 20:26:06,157 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:26:06,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-24 20:26:06,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba5ff6657/ca109a6ce82b424b8c967c593bf7fd38/FLAG769a7152e [2020-09-24 20:26:06,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba5ff6657/ca109a6ce82b424b8c967c593bf7fd38 [2020-09-24 20:26:06,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:26:06,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:26:06,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:06,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:26:06,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:26:06,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7d2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06, skipping insertion in model container [2020-09-24 20:26:06,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:26:06,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:26:06,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:06,782 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:26:06,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:06,819 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:26:06,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06 WrapperNode [2020-09-24 20:26:06,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:06,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:26:06,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:26:06,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:26:06,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... [2020-09-24 20:26:06,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:26:06,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:26:06,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:26:06,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:26:06,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:26:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:26:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:26:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:26:07,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:26:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:26:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:26:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:26:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:26:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:26:07,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:26:07,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:26:07,229 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:26:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:07 BoogieIcfgContainer [2020-09-24 20:26:07,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:26:07,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:26:07,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:26:07,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:26:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:26:06" (1/3) ... [2020-09-24 20:26:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:07, skipping insertion in model container [2020-09-24 20:26:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:06" (2/3) ... [2020-09-24 20:26:07,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:07, skipping insertion in model container [2020-09-24 20:26:07,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:07" (3/3) ... [2020-09-24 20:26:07,245 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-24 20:26:07,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:26:07,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:26:07,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:26:07,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:26:07,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:26:07,371 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:26:07,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:26:07,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:26:07,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:26:07,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:26:07,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:26:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 20:26:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:26:07,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:07,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:07,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:07,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-24 20:26:07,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:07,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366044417] [2020-09-24 20:26:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:26:07,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 20:26:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:26:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:26:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:07,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:26:07,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366044417] [2020-09-24 20:26:07,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:26:07,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:26:07,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249100401] [2020-09-24 20:26:07,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:26:07,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:07,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:26:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:26:07,992 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 20:26:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:08,075 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 20:26:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:26:08,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:26:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:08,093 INFO L225 Difference]: With dead ends: 37 [2020-09-24 20:26:08,093 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 20:26:08,098 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 [2020-09-24 20:26:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 20:26:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-24 20:26:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 20:26:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-24 20:26:08,150 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-24 20:26:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:08,150 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-24 20:26:08,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:26:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-24 20:26:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:26:08,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:08,153 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] [2020-09-24 20:26:08,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:26:08,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-24 20:26:08,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:08,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8100293] [2020-09-24 20:26:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-24 20:26:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:26:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:26:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:08,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:26:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:08,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 20:26:08,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:08,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:26:08,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:26:08,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8100293] [2020-09-24 20:26:08,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:08,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:26:08,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865677100] [2020-09-24 20:26:08,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:26:08,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:08,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:26:08,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:26:08,928 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-24 20:26:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:09,045 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-24 20:26:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:26:09,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 20:26:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:09,048 INFO L225 Difference]: With dead ends: 34 [2020-09-24 20:26:09,048 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:26:09,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:26:09,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:26:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:26:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 20:26:09,068 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-24 20:26:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:09,069 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 20:26:09,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:26:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 20:26:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 20:26:09,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:09,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:09,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:26:09,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-24 20:26:09,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:09,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063449753] [2020-09-24 20:26:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:26:09,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-24 20:26:09,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:26:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:09,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 20:26:09,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:09,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 20:26:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:26:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:26:10,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063449753] [2020-09-24 20:26:10,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:10,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:26:10,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922960833] [2020-09-24 20:26:10,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:26:10,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:10,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:26:10,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:10,022 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-24 20:26:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:10,123 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 20:26:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:26:10,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-24 20:26:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:10,125 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:26:10,125 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 20:26:10,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 20:26:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 20:26:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 20:26:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 20:26:10,134 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-24 20:26:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:10,134 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 20:26:10,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:26:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 20:26:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:26:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:10,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:10,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:26:10,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-24 20:26:10,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:10,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787110652] [2020-09-24 20:26:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-24 20:26:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:26:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:26:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:11,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:11,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:11,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 20:26:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:11,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:26:11,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:11,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:26:11,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:11,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:26:11,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787110652] [2020-09-24 20:26:11,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:11,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:11,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276926674] [2020-09-24 20:26:11,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:11,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:11,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:11,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:11,426 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-24 20:26:11,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:11,546 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-24 20:26:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:26:11,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-24 20:26:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:11,549 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:26:11,549 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:26:11,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:26:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 20:26:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:26:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 20:26:11,557 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-24 20:26:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:11,558 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 20:26:11,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 20:26:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:26:11,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:11,561 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:11,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:26:11,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:11,562 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-24 20:26:11,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:11,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753467341] [2020-09-24 20:26:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:26:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-09-24 20:26:12,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 20:26:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:26:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:13,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 20:26:13,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:13,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:26:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:13,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 20:26:13,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:26:13,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:13,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:13,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:26:13,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753467341] [2020-09-24 20:26:13,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:13,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:26:13,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818259907] [2020-09-24 20:26:13,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:26:13,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:26:13,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:13,580 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-24 20:26:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:13,704 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-24 20:26:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:13,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-24 20:26:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:13,706 INFO L225 Difference]: With dead ends: 49 [2020-09-24 20:26:13,706 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 20:26:13,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:26:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 20:26:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 20:26:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 20:26:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 20:26:13,715 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-24 20:26:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:13,715 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 20:26:13,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:26:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 20:26:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:26:13,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:13,718 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:13,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:26:13,718 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-24 20:26:13,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:13,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073332801] [2020-09-24 20:26:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:26:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-09-24 20:26:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:26:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 20:26:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:26:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:15,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 20:26:16,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:16,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 20:26:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 20:26:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 20:26:16,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:16,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:26:16,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:16,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:26:16,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073332801] [2020-09-24 20:26:16,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:16,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:26:16,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107834154] [2020-09-24 20:26:16,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:26:16,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:16,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:26:16,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:16,595 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-24 20:26:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:16,766 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-24 20:26:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:26:16,768 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 20:26:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:16,770 INFO L225 Difference]: With dead ends: 54 [2020-09-24 20:26:16,770 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 20:26:16,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 20:26:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 20:26:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 20:26:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-24 20:26:16,783 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-24 20:26:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:16,783 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-24 20:26:16,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:26:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-24 20:26:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 20:26:16,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:16,786 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:16,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:26:16,786 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:16,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-24 20:26:16,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:16,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33048614] [2020-09-24 20:26:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:26:19,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-09-24 20:26:19,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:19,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:19,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 20:26:19,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:26:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 20:26:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 20:26:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:20,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 20:26:20,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:26:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:20,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:26:20,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 20:26:20,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33048614] [2020-09-24 20:26:20,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:20,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:26:20,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155941165] [2020-09-24 20:26:20,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:26:20,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:26:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:20,700 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-24 20:26:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:20,819 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 20:26:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:26:20,819 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-24 20:26:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:20,821 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:26:20,821 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:26:20,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:26:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:26:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 20:26:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:26:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 20:26:20,829 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-24 20:26:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:20,830 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 20:26:20,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:26:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 20:26:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:26:20,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:20,831 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:20,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:20,832 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-24 20:26:20,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:20,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147994640] [2020-09-24 20:26:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3584 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:26:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-24 20:26:24,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 20:26:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:25,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 20:26:25,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:26:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:25,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 20:26:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:25,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 20:26:25,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:25,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 20:26:25,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 20:26:25,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:26:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:25,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:26:25,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 20:26:25,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147994640] [2020-09-24 20:26:25,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:25,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:26:25,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677658972] [2020-09-24 20:26:25,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:26:25,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:26:25,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:25,987 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-24 20:26:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:26,167 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-24 20:26:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:26:26,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-24 20:26:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:26,169 INFO L225 Difference]: With dead ends: 64 [2020-09-24 20:26:26,169 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 20:26:26,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 20:26:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 20:26:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 20:26:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 20:26:26,177 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-24 20:26:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:26,178 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 20:26:26,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:26:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 20:26:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 20:26:26,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:26,180 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:26,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:26,180 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:26,181 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-24 20:26:26,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:26,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140278371] [2020-09-24 20:26:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 20:26:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4568 [2020-09-24 20:26:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:26:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 20:26:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 20:26:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:30,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:26:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 20:26:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:26:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:31,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 20:26:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:26:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 20:26:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:32,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:26:32,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:26:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 20:26:32,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140278371] [2020-09-24 20:26:32,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:32,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 20:26:32,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181307105] [2020-09-24 20:26:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:26:32,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:26:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:32,623 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-24 20:26:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:32,831 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-24 20:26:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:26:32,831 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-24 20:26:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:32,835 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:26:32,835 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 20:26:32,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:26:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 20:26:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 20:26:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 20:26:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-24 20:26:32,847 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-24 20:26:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:32,847 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-24 20:26:32,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:26:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-24 20:26:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 20:26:32,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:32,849 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:32,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:32,849 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-24 20:26:32,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:32,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460962008] [2020-09-24 20:26:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:26:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:26:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:37,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:37,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:37,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:37,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:38,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 20:26:38,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 20:26:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-24 20:26:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 20:26:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:39,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:26:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:26:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:39,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:39,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 20:26:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:26:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:40,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:26:40,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 23 proven. 222 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-24 20:26:40,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460962008] [2020-09-24 20:26:40,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:40,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:26:40,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477625955] [2020-09-24 20:26:40,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:26:40,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:40,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:26:40,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:40,239 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 16 states. [2020-09-24 20:26:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:40,441 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-24 20:26:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:40,442 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-09-24 20:26:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:40,444 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:26:40,445 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:26:40,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:26:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:26:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 20:26:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 20:26:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 20:26:40,452 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-24 20:26:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:40,453 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 20:26:40,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:26:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 20:26:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 20:26:40,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:40,454 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:40,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:26:40,455 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:40,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-24 20:26:40,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:40,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250774699] [2020-09-24 20:26:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 20:26:45,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:45,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:45,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 20:26:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:46,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-24 20:26:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:26:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 20:26:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 20:26:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:47,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 20:26:47,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:26:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:26:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:47,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 20:26:47,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:47,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:48,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 20:26:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:48,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:26:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 12 proven. 285 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-24 20:26:48,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250774699] [2020-09-24 20:26:48,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:48,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:26:48,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383869476] [2020-09-24 20:26:48,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:26:48,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:48,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:26:48,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:48,263 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 16 states. [2020-09-24 20:26:48,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:48,480 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 20:26:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:26:48,483 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-09-24 20:26:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:48,485 INFO L225 Difference]: With dead ends: 79 [2020-09-24 20:26:48,485 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 20:26:48,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:26:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 20:26:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 20:26:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 20:26:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-24 20:26:48,494 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-24 20:26:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:48,494 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-24 20:26:48,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:26:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-24 20:26:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 20:26:48,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:48,496 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:48,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:26:48,496 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:48,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-24 20:26:48,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:48,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210640126] [2020-09-24 20:26:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:26:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 20:26:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 20:26:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:53,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 20:26:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 20:26:54,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 20:26:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:54,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:55,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-24 20:26:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:26:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:55,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:26:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:56,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-24 20:26:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 20:26:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:26:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:56,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:26:56,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 20:26:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210640126] [2020-09-24 20:26:57,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:57,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:26:57,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464653908] [2020-09-24 20:26:57,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:26:57,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:26:57,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:26:57,056 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-24 20:26:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:57,329 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-24 20:26:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 20:26:57,329 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-24 20:26:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:57,331 INFO L225 Difference]: With dead ends: 84 [2020-09-24 20:26:57,331 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 20:26:57,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:26:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 20:26:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-24 20:26:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 20:26:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-24 20:26:57,339 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-24 20:26:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:57,339 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-24 20:26:57,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 20:26:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-24 20:26:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 20:26:57,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:57,341 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:57,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:26:57,341 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:57,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-24 20:26:57,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:57,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493328768] [2020-09-24 20:26:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking...