/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:43:07,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:43:07,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:43:07,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:43:07,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:43:07,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:43:07,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:43:07,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:43:07,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:43:07,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:43:07,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:43:07,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:43:07,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:43:07,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:43:07,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:43:07,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:43:07,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:43:07,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:43:07,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:43:07,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:43:07,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:43:07,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:43:07,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:43:07,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:43:07,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:43:07,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:43:07,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:43:07,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:43:07,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:43:07,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:43:07,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:43:07,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:43:07,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:43:07,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:43:07,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:43:07,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:43:07,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:43:07,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:43:07,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:43:07,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:43:07,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:43:07,166 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 [2020-10-12 09:43:07,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:43:07,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:43:07,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:43:07,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:43:07,217 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:43:07,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:43:07,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:43:07,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:43:07,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:43:07,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:43:07,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:43:07,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:43:07,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:43:07,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:43:07,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:43:07,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:43:07,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:43:07,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:43:07,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:43:07,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:43:07,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:43:07,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:43:07,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:43:07,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:43:07,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:43:07,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:43:07,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:43:07,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:43:07,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:43:07,224 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 09:43:07,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:43:07,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:43:07,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:43:07,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:43:07,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:43:07,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-12 09:43:07,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8f536f4f/822ec65c64664c25add8c3f73306d563/FLAGdcd13d90a [2020-10-12 09:43:08,100 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:43:08,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-12 09:43:08,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8f536f4f/822ec65c64664c25add8c3f73306d563/FLAGdcd13d90a [2020-10-12 09:43:08,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8f536f4f/822ec65c64664c25add8c3f73306d563 [2020-10-12 09:43:08,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:43:08,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:43:08,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:43:08,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:43:08,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:43:08,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4f5ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08, skipping insertion in model container [2020-10-12 09:43:08,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:43:08,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:43:08,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:43:08,713 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:43:08,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:43:08,754 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:43:08,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08 WrapperNode [2020-10-12 09:43:08,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:43:08,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:43:08,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:43:08,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:43:08,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (1/1) ... [2020-10-12 09:43:08,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:43:08,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:43:08,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:43:08,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:43:08,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (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 [2020-10-12 09:43:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:43:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:43:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 09:43:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:43:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:43:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 09:43:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:43:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:43:09,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:43:09,288 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-12 09:43:09,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:09 BoogieIcfgContainer [2020-10-12 09:43:09,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:43:09,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:43:09,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:43:09,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:43:09,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:43:08" (1/3) ... [2020-10-12 09:43:09,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d15c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:09, skipping insertion in model container [2020-10-12 09:43:09,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:08" (2/3) ... [2020-10-12 09:43:09,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d15c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:09, skipping insertion in model container [2020-10-12 09:43:09,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:09" (3/3) ... [2020-10-12 09:43:09,305 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2020-10-12 09:43:09,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:43:09,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:43:09,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:43:09,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:43:09,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:43:09,386 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:43:09,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:43:09,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:43:09,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:43:09,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:43:09,387 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:43:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-12 09:43:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 09:43:09,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:09,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:09,418 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1109148347, now seen corresponding path program 1 times [2020-10-12 09:43:09,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:09,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697674368] [2020-10-12 09:43:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:13,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:13,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:43:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 09:43:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3825 [2020-10-12 09:43:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 09:43:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 09:43:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:13,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:13,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:13,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697674368] [2020-10-12 09:43:13,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:43:13,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 09:43:13,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773408773] [2020-10-12 09:43:13,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:13,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:13,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:13,603 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-10-12 09:43:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:14,025 INFO L93 Difference]: Finished difference Result 104 states and 158 transitions. [2020-10-12 09:43:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:43:14,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-12 09:43:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:14,037 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:43:14,038 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 09:43:14,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:43:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 09:43:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-12 09:43:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:43:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2020-10-12 09:43:14,096 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 28 [2020-10-12 09:43:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:14,097 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2020-10-12 09:43:14,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-10-12 09:43:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 09:43:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:14,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:14,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:43:14,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1708150033, now seen corresponding path program 1 times [2020-10-12 09:43:14,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:14,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438346069] [2020-10-12 09:43:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:43:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 09:43:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:43:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:43:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:43:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:19,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:19,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:19,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:19,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:19,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:19,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438346069] [2020-10-12 09:43:19,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:43:19,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93164651] [2020-10-12 09:43:19,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:19,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:19,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:19,195 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 6 states. [2020-10-12 09:43:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:19,413 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-10-12 09:43:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:43:19,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-12 09:43:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:19,415 INFO L225 Difference]: With dead ends: 91 [2020-10-12 09:43:19,416 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 09:43:19,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:43:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 09:43:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-12 09:43:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:43:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-12 09:43:19,427 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2020-10-12 09:43:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:19,428 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-12 09:43:19,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-12 09:43:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 09:43:19,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:19,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:19,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:43:19,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1412380863, now seen corresponding path program 1 times [2020-10-12 09:43:19,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:19,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328812408] [2020-10-12 09:43:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:19,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:43:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 09:43:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:43:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:43:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:24,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:24,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:24,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:24,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 09:43:24,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328812408] [2020-10-12 09:43:24,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:24,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:43:24,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970606415] [2020-10-12 09:43:24,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:24,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:24,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:24,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:24,517 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2020-10-12 09:43:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:24,803 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2020-10-12 09:43:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:43:24,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-12 09:43:24,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:24,804 INFO L225 Difference]: With dead ends: 102 [2020-10-12 09:43:24,805 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 09:43:24,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:43:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 09:43:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-12 09:43:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:43:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-12 09:43:24,816 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 46 [2020-10-12 09:43:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:24,816 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-12 09:43:24,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-12 09:43:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 09:43:24,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:24,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:24,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:43:24,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -541579825, now seen corresponding path program 2 times [2020-10-12 09:43:24,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:24,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145553206] [2020-10-12 09:43:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:43:30,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:43:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-12 09:43:30,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-12 09:43:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 09:43:30,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:43:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:33,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145553206] [2020-10-12 09:43:33,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:33,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-12 09:43:33,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110560643] [2020-10-12 09:43:33,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-12 09:43:33,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:33,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-12 09:43:33,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 09:43:33,153 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 44 states. [2020-10-12 09:43:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:37,700 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-10-12 09:43:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 09:43:37,700 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 64 [2020-10-12 09:43:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:37,703 INFO L225 Difference]: With dead ends: 127 [2020-10-12 09:43:37,703 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 09:43:37,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=332, Invalid=4360, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:43:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 09:43:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2020-10-12 09:43:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 09:43:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-12 09:43:37,721 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 64 [2020-10-12 09:43:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:37,722 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-12 09:43:37,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-12 09:43:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-12 09:43:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 09:43:37,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:37,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:37,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:43:37,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:37,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2090829139, now seen corresponding path program 3 times [2020-10-12 09:43:37,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:37,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496982811] [2020-10-12 09:43:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:42,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:43:42,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:43:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:43:42,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:43:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 09:43:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:43:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:42,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:43:42,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 09:43:42,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496982811] [2020-10-12 09:43:42,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:42,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:43:42,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175425801] [2020-10-12 09:43:42,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:43:42,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:42,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:43:42,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:43:42,836 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 10 states. [2020-10-12 09:43:43,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:43,594 INFO L93 Difference]: Finished difference Result 178 states and 208 transitions. [2020-10-12 09:43:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:43:43,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-12 09:43:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:43,597 INFO L225 Difference]: With dead ends: 178 [2020-10-12 09:43:43,597 INFO L226 Difference]: Without dead ends: 131 [2020-10-12 09:43:43,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:43:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-12 09:43:43,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2020-10-12 09:43:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 09:43:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2020-10-12 09:43:43,616 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 66 [2020-10-12 09:43:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:43,616 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2020-10-12 09:43:43,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:43:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2020-10-12 09:43:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 09:43:43,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:43,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:43,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:43:43,619 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash 246171885, now seen corresponding path program 4 times [2020-10-12 09:43:43,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:43,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577413704] [2020-10-12 09:43:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:48,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:43:48,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:43:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:43:48,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:43:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 09:43:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:43:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:48,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:48,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 09:43:48,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577413704] [2020-10-12 09:43:48,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:48,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:43:48,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943799901] [2020-10-12 09:43:48,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:43:48,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:48,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:43:48,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:43:48,739 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand 10 states. [2020-10-12 09:43:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:49,217 INFO L93 Difference]: Finished difference Result 203 states and 226 transitions. [2020-10-12 09:43:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:43:49,218 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-12 09:43:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:49,220 INFO L225 Difference]: With dead ends: 203 [2020-10-12 09:43:49,221 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:43:49,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:43:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:43:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-12 09:43:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:43:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-12 09:43:49,233 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 66 [2020-10-12 09:43:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:49,233 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-12 09:43:49,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:43:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-12 09:43:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 09:43:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:49,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:49,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:43:49,235 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash 79084765, now seen corresponding path program 5 times [2020-10-12 09:43:49,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:49,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423567826] [2020-10-12 09:43:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:54,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5375 [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-12 09:43:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 09:43:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:44:00,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:44:00,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423567826] [2020-10-12 09:44:00,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:00,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-12 09:44:00,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569594575] [2020-10-12 09:44:00,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-12 09:44:00,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:00,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-12 09:44:00,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=2993, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 09:44:00,136 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 58 states. [2020-10-12 09:44:00,462 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 63 [2020-10-12 09:44:00,884 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2020-10-12 09:44:01,884 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2020-10-12 09:44:02,152 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 58 [2020-10-12 09:44:02,473 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 41 [2020-10-12 09:44:02,749 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 42 [2020-10-12 09:44:03,079 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-12 09:44:03,633 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-12 09:44:04,053 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-10-12 09:44:05,025 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2020-10-12 09:44:05,362 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 65 [2020-10-12 09:44:05,670 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2020-10-12 09:44:06,027 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2020-10-12 09:44:07,148 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 88 [2020-10-12 09:44:07,796 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2020-10-12 09:44:08,314 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2020-10-12 09:44:08,772 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-10-12 09:44:09,246 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2020-10-12 09:44:09,562 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2020-10-12 09:44:10,005 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2020-10-12 09:44:10,485 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2020-10-12 09:44:10,948 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-12 09:44:11,470 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-12 09:44:11,965 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 09:44:13,042 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2020-10-12 09:44:13,759 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2020-10-12 09:44:14,369 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-10-12 09:44:14,789 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 09:44:15,162 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-12 09:44:15,723 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2020-10-12 09:44:15,975 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-12 09:44:16,728 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-12 09:44:17,069 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 62 [2020-10-12 09:44:17,516 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 54 [2020-10-12 09:44:18,022 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 09:44:18,563 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 09:44:18,892 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-12 09:44:19,289 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 09:44:19,735 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-10-12 09:44:20,158 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-12 09:44:20,633 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 64 [2020-10-12 09:44:21,074 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2020-10-12 09:44:21,514 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 62 [2020-10-12 09:44:21,872 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-10-12 09:44:22,704 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2020-10-12 09:44:23,294 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2020-10-12 09:44:23,611 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2020-10-12 09:44:24,134 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-12 09:44:24,533 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-12 09:44:24,929 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-10-12 09:44:25,297 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-10-12 09:44:27,817 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-10-12 09:44:28,283 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-10-12 09:44:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:29,239 INFO L93 Difference]: Finished difference Result 266 states and 300 transitions. [2020-10-12 09:44:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-12 09:44:29,240 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 82 [2020-10-12 09:44:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:29,242 INFO L225 Difference]: With dead ends: 266 [2020-10-12 09:44:29,242 INFO L226 Difference]: Without dead ends: 120 [2020-10-12 09:44:29,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4923 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=2282, Invalid=16078, Unknown=0, NotChecked=0, Total=18360 [2020-10-12 09:44:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-12 09:44:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2020-10-12 09:44:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 09:44:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-10-12 09:44:29,302 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 82 [2020-10-12 09:44:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:29,307 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-10-12 09:44:29,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-12 09:44:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-10-12 09:44:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 09:44:29,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:29,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:29,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:44:29,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:29,314 INFO L82 PathProgramCache]: Analyzing trace with hash -73198213, now seen corresponding path program 6 times [2020-10-12 09:44:29,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:29,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947779359] [2020-10-12 09:44:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:34,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:34,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:44:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:44:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:34,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:34,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:34,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:44:34,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947779359] [2020-10-12 09:44:34,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:34,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:44:34,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443578155] [2020-10-12 09:44:34,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:44:34,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:34,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:44:34,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:44:34,487 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 12 states. [2020-10-12 09:44:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:35,350 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2020-10-12 09:44:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:44:35,351 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-12 09:44:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:35,353 INFO L225 Difference]: With dead ends: 258 [2020-10-12 09:44:35,353 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 09:44:35,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:44:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 09:44:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2020-10-12 09:44:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 09:44:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-10-12 09:44:35,386 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 84 [2020-10-12 09:44:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:35,386 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-10-12 09:44:35,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:44:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-10-12 09:44:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 09:44:35,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:35,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:35,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:44:35,389 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1772148347, now seen corresponding path program 7 times [2020-10-12 09:44:35,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:35,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897380202] [2020-10-12 09:44:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:35,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:40,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:44:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:44:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:44:40,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:44:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:44:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:44:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:44:40,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897380202] [2020-10-12 09:44:40,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:40,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:44:40,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589065239] [2020-10-12 09:44:40,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:44:40,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:40,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:44:40,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:44:40,597 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand 12 states. [2020-10-12 09:44:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:41,754 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2020-10-12 09:44:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:44:41,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-12 09:44:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:41,757 INFO L225 Difference]: With dead ends: 162 [2020-10-12 09:44:41,757 INFO L226 Difference]: Without dead ends: 101 [2020-10-12 09:44:41,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:44:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-12 09:44:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-12 09:44:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 09:44:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-12 09:44:41,774 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 84 [2020-10-12 09:44:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:41,774 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-12 09:44:41,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:44:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-12 09:44:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 09:44:41,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:41,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:41,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:44:41,778 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1175415915, now seen corresponding path program 8 times [2020-10-12 09:44:41,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:41,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925358135] [2020-10-12 09:44:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 09:44:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:44:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 09:44:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-12 09:44:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:44:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 09:44:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:57,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:57,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:57,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:44:57,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925358135] [2020-10-12 09:44:57,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:57,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-12 09:44:57,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267586433] [2020-10-12 09:44:57,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-12 09:44:57,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-12 09:44:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=5212, Unknown=0, NotChecked=0, Total=5402 [2020-10-12 09:44:57,692 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 74 states. [2020-10-12 09:45:02,513 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-12 09:45:04,355 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 09:45:05,188 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-12 09:45:06,446 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 09:45:07,411 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-12 09:45:08,252 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 09:45:08,845 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-12 09:45:10,036 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-12 09:45:20,258 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-12 09:45:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:23,625 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2020-10-12 09:45:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-12 09:45:23,631 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 100 [2020-10-12 09:45:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:23,636 INFO L225 Difference]: With dead ends: 203 [2020-10-12 09:45:23,636 INFO L226 Difference]: Without dead ends: 198 [2020-10-12 09:45:23,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=479, Invalid=15523, Unknown=0, NotChecked=0, Total=16002 [2020-10-12 09:45:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-12 09:45:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 176. [2020-10-12 09:45:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-12 09:45:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2020-10-12 09:45:23,660 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 100 [2020-10-12 09:45:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:23,661 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2020-10-12 09:45:23,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-12 09:45:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2020-10-12 09:45:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 09:45:23,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:23,663 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:23,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:45:23,663 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash 526715465, now seen corresponding path program 9 times [2020-10-12 09:45:23,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:23,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659651369] [2020-10-12 09:45:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:28,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:45:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 09:45:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:45:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:45:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 09:45:28,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659651369] [2020-10-12 09:45:28,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:28,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:45:28,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666149992] [2020-10-12 09:45:28,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:45:28,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:45:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:45:28,994 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand 14 states. [2020-10-12 09:45:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:31,738 INFO L93 Difference]: Finished difference Result 274 states and 304 transitions. [2020-10-12 09:45:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:45:31,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-12 09:45:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:31,742 INFO L225 Difference]: With dead ends: 274 [2020-10-12 09:45:31,742 INFO L226 Difference]: Without dead ends: 199 [2020-10-12 09:45:31,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:45:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-12 09:45:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 180. [2020-10-12 09:45:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-12 09:45:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 195 transitions. [2020-10-12 09:45:31,761 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 195 transitions. Word has length 102 [2020-10-12 09:45:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:31,761 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 195 transitions. [2020-10-12 09:45:31,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:45:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 195 transitions. [2020-10-12 09:45:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 09:45:31,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:31,763 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:31,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:45:31,764 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:31,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1011636361, now seen corresponding path program 10 times [2020-10-12 09:45:31,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:31,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917650489] [2020-10-12 09:45:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:36,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:45:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:45:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:37,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:37,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:37,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:37,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:45:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:45:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 09:45:37,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917650489] [2020-10-12 09:45:37,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:37,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:45:37,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209113429] [2020-10-12 09:45:37,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:45:37,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:37,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:45:37,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:45:37,202 INFO L87 Difference]: Start difference. First operand 180 states and 195 transitions. Second operand 14 states. [2020-10-12 09:45:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:39,018 INFO L93 Difference]: Finished difference Result 299 states and 322 transitions. [2020-10-12 09:45:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:45:39,021 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-12 09:45:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:39,023 INFO L225 Difference]: With dead ends: 299 [2020-10-12 09:45:39,023 INFO L226 Difference]: Without dead ends: 128 [2020-10-12 09:45:39,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:45:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-12 09:45:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119. [2020-10-12 09:45:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 09:45:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-10-12 09:45:39,037 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 102 [2020-10-12 09:45:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:39,037 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-10-12 09:45:39,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:45:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-10-12 09:45:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 09:45:39,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:39,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:39,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:45:39,040 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:39,040 INFO L82 PathProgramCache]: Analyzing trace with hash -871558023, now seen corresponding path program 11 times [2020-10-12 09:45:39,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:39,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808409268] [2020-10-12 09:45:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:44,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 09:45:44,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:45:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 09:45:44,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-12 09:45:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:45:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 09:45:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:45,751 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 09:45:45,993 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-12 09:45:46,369 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-12 09:45:46,692 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-12 09:45:46,995 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-12 09:45:47,391 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-12 09:45:47,725 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-12 09:45:48,163 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-12 09:45:48,462 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-10-12 09:45:48,798 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-12 09:45:49,132 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-12 09:45:49,491 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-12 09:45:49,903 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-12 09:45:50,283 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-12 09:45:50,760 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-10-12 09:45:51,327 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2020-10-12 09:45:51,798 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-12 09:45:52,222 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-12 09:45:52,664 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-12 09:45:53,123 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-12 09:45:53,590 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-10-12 09:45:54,109 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-12 09:45:54,615 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-12 09:45:55,162 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-12 09:45:55,636 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-10-12 09:45:56,147 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-12 09:45:56,660 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-12 09:45:57,204 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-12 09:45:57,914 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-12 09:45:58,572 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-12 09:45:59,284 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-12 09:45:59,909 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-10-12 09:46:00,505 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-10-12 09:46:01,111 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-12 09:46:01,748 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-12 09:46:02,649 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2020-10-12 09:46:03,494 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-10-12 09:46:04,360 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2020-10-12 09:46:05,245 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2020-10-12 09:46:06,086 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-10-12 09:46:06,799 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-10-12 09:46:07,418 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-10-12 09:46:08,078 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-10-12 09:46:08,687 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-12 09:46:09,780 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-12 09:46:10,434 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-12 09:46:11,122 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-10-12 09:46:12,062 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-12 09:46:13,044 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-12 09:46:13,789 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-12 09:46:14,476 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-12 09:46:15,107 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-12 09:46:15,918 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2020-10-12 09:46:16,616 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-10-12 09:46:17,245 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-10-12 09:46:17,906 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-12 09:46:18,623 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-12 09:46:19,524 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-12 09:46:20,527 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-12 09:46:21,536 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 09:46:22,201 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-12 09:46:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:46:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:46:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:46:27,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:46:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:46:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:46:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:46:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:46:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:46:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:46:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:46:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:46:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 16 proven. 184 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 09:46:27,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808409268] [2020-10-12 09:46:27,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:46:27,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-12 09:46:27,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33922416] [2020-10-12 09:46:27,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-12 09:46:27,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:46:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-12 09:46:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=6926, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 09:46:27,811 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 86 states. [2020-10-12 09:46:28,866 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 3 [2020-10-12 09:46:30,126 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 18 [2020-10-12 09:46:31,351 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2020-10-12 09:46:32,660 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2020-10-12 09:46:33,501 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2020-10-12 09:46:34,547 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2020-10-12 09:46:35,205 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-10-12 09:46:35,725 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 09:46:36,366 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-12 09:46:37,382 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-10-12 09:46:38,596 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 61 [2020-10-12 09:46:39,592 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2020-10-12 09:46:40,591 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 62 [2020-10-12 09:46:41,278 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-12 09:46:42,096 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2020-10-12 09:46:42,853 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-10-12 09:46:43,676 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 09:46:44,544 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-12 09:46:45,212 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-12 09:46:46,195 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-10-12 09:46:46,915 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 38 [2020-10-12 09:46:47,930 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 51 [2020-10-12 09:46:49,000 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 09:46:49,884 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2020-10-12 09:46:51,015 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-12 09:46:51,735 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2020-10-12 09:46:52,280 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 38 [2020-10-12 09:46:52,833 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-10-12 09:46:53,442 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 42 [2020-10-12 09:46:53,986 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-10-12 09:46:54,535 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-10-12 09:46:55,063 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-10-12 09:46:55,781 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-12 09:46:56,427 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2020-10-12 09:46:57,275 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72