/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:28,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:28,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:28,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:28,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:28,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:28,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:28,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:28,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:28,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:28,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:28,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:28,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:28,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:28,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:28,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:28,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:28,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:28,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:28,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:28,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:28,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:28,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:28,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:28,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:28,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:28,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:28,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:28,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:28,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 19:26:28,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:28,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:28,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:28,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:26:28,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:28,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:28,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:28,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:28,875 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:28,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:28,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:28,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:28,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:28,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:28,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:28,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:28,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:28,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:28,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:28,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:28,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:28,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:28,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:28,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:28,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:28,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:28,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:28,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:28,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:28,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:28,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:28,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:28,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:28,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:29,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:29,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:29,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:29,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:29,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:29,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-24 19:26:29,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c4982203/b580e4fa80d547d5beb0d7ec82155923/FLAGd5a79d9c5 [2020-09-24 19:26:30,117 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:30,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-24 19:26:30,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c4982203/b580e4fa80d547d5beb0d7ec82155923/FLAGd5a79d9c5 [2020-09-24 19:26:30,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c4982203/b580e4fa80d547d5beb0d7ec82155923 [2020-09-24 19:26:30,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:30,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:30,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:30,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:30,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:30,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:30" (1/1) ... [2020-09-24 19:26:30,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402282b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:30, skipping insertion in model container [2020-09-24 19:26:30,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:30" (1/1) ... [2020-09-24 19:26:30,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:30,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:30,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:30,900 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:31,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:31,140 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:31,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31 WrapperNode [2020-09-24 19:26:31,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:31,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:31,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:31,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:31,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... [2020-09-24 19:26:31,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:31,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:31,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:31,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:31,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:32,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:32,749 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:32,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:32 BoogieIcfgContainer [2020-09-24 19:26:32,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:32,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:32,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:32,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:30" (1/3) ... [2020-09-24 19:26:32,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e24bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:32, skipping insertion in model container [2020-09-24 19:26:32,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:31" (2/3) ... [2020-09-24 19:26:32,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e24bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:32, skipping insertion in model container [2020-09-24 19:26:32,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:32" (3/3) ... [2020-09-24 19:26:32,773 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-24 19:26:32,786 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:32,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:32,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:32,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:32,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:32,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:32,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:32,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:32,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:32,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:32,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 19:26:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 19:26:32,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:32,955 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:32,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:32,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:32,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-24 19:26:32,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:32,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22857649] [2020-09-24 19:26:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:26:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:26:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:26:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:26:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:26:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:34,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:26:34,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:26:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:34,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22857649] [2020-09-24 19:26:34,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:34,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:26:34,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677506994] [2020-09-24 19:26:34,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:26:34,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:34,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:26:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:26:34,718 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 19:26:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:36,855 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 19:26:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:36,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-24 19:26:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:36,883 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 19:26:36,883 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 19:26:36,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 19:26:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 19:26:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 19:26:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-24 19:26:37,007 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 155 [2020-09-24 19:26:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:37,010 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-24 19:26:37,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:26:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-24 19:26:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 19:26:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:37,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:37,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:37,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 372852103, now seen corresponding path program 1 times [2020-09-24 19:26:37,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:37,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217438739] [2020-09-24 19:26:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:38,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:38,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 19:26:38,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:26:38,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 19:26:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:26:38,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:26:38,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:38,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:26:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:38,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:38,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:26:38,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:38,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:26:38,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:26:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:38,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217438739] [2020-09-24 19:26:38,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:38,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:26:38,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510764743] [2020-09-24 19:26:38,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:38,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:38,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:38,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:38,525 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 7 states. [2020-09-24 19:26:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:41,302 INFO L93 Difference]: Finished difference Result 1746 states and 2223 transitions. [2020-09-24 19:26:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:41,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-24 19:26:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:41,313 INFO L225 Difference]: With dead ends: 1746 [2020-09-24 19:26:41,313 INFO L226 Difference]: Without dead ends: 1155 [2020-09-24 19:26:41,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2020-09-24 19:26:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1036. [2020-09-24 19:26:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 19:26:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1301 transitions. [2020-09-24 19:26:41,384 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1301 transitions. Word has length 189 [2020-09-24 19:26:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:41,384 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1301 transitions. [2020-09-24 19:26:41,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1301 transitions. [2020-09-24 19:26:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 19:26:41,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:41,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:41,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:41,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:41,392 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-24 19:26:41,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:41,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83619026] [2020-09-24 19:26:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 19:26:42,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:26:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 19:26:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 19:26:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:42,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:42,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:26:42,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:42,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83619026] [2020-09-24 19:26:42,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:42,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:42,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857374988] [2020-09-24 19:26:42,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:42,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:42,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:42,828 INFO L87 Difference]: Start difference. First operand 1036 states and 1301 transitions. Second operand 5 states. [2020-09-24 19:26:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:44,796 INFO L93 Difference]: Finished difference Result 2575 states and 3345 transitions. [2020-09-24 19:26:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:44,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-24 19:26:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:44,806 INFO L225 Difference]: With dead ends: 2575 [2020-09-24 19:26:44,807 INFO L226 Difference]: Without dead ends: 1561 [2020-09-24 19:26:44,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2020-09-24 19:26:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1507. [2020-09-24 19:26:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-24 19:26:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1837 transitions. [2020-09-24 19:26:44,872 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1837 transitions. Word has length 193 [2020-09-24 19:26:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:44,873 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1837 transitions. [2020-09-24 19:26:44,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1837 transitions. [2020-09-24 19:26:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 19:26:44,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:44,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:44,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:44,884 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:44,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-24 19:26:44,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:44,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396511735] [2020-09-24 19:26:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 19:26:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:26:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:26:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:26:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:26:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:46,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:26:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:26:46,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:26:46,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:26:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:46,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396511735] [2020-09-24 19:26:46,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:46,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:46,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982075625] [2020-09-24 19:26:46,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:46,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:46,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:46,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:46,331 INFO L87 Difference]: Start difference. First operand 1507 states and 1837 transitions. Second operand 7 states. [2020-09-24 19:26:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:48,572 INFO L93 Difference]: Finished difference Result 4009 states and 5174 transitions. [2020-09-24 19:26:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:48,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-24 19:26:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:48,593 INFO L225 Difference]: With dead ends: 4009 [2020-09-24 19:26:48,593 INFO L226 Difference]: Without dead ends: 2524 [2020-09-24 19:26:48,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2020-09-24 19:26:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2454. [2020-09-24 19:26:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-09-24 19:26:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3023 transitions. [2020-09-24 19:26:48,702 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3023 transitions. Word has length 212 [2020-09-24 19:26:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:48,702 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 3023 transitions. [2020-09-24 19:26:48,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3023 transitions. [2020-09-24 19:26:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 19:26:48,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:48,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:48,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:48,714 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:48,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:48,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1662115604, now seen corresponding path program 1 times [2020-09-24 19:26:48,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:48,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374137865] [2020-09-24 19:26:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-24 19:26:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:26:49,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 19:26:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:26:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:26:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:26:49,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:26:49,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:50,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:26:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:26:50,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:26:50,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374137865] [2020-09-24 19:26:50,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:50,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:50,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803749905] [2020-09-24 19:26:50,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:50,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:50,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:50,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:50,297 INFO L87 Difference]: Start difference. First operand 2454 states and 3023 transitions. Second operand 7 states. [2020-09-24 19:26:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:53,052 INFO L93 Difference]: Finished difference Result 5740 states and 7289 transitions. [2020-09-24 19:26:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:53,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-24 19:26:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:53,071 INFO L225 Difference]: With dead ends: 5740 [2020-09-24 19:26:53,071 INFO L226 Difference]: Without dead ends: 2726 [2020-09-24 19:26:53,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-09-24 19:26:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2693. [2020-09-24 19:26:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2693 states. [2020-09-24 19:26:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3195 transitions. [2020-09-24 19:26:53,163 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3195 transitions. Word has length 237 [2020-09-24 19:26:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:53,163 INFO L479 AbstractCegarLoop]: Abstraction has 2693 states and 3195 transitions. [2020-09-24 19:26:53,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3195 transitions. [2020-09-24 19:26:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 19:26:53,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:53,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:53,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:53,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1863977307, now seen corresponding path program 1 times [2020-09-24 19:26:53,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:53,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718256637] [2020-09-24 19:26:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 19:26:54,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:26:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:26:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:26:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:54,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:54,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:26:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:26:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:26:54,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:26:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:26:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 19:26:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:54,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:54,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 19:26:54,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718256637] [2020-09-24 19:26:54,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:54,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:54,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319640113] [2020-09-24 19:26:54,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:54,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:54,949 INFO L87 Difference]: Start difference. First operand 2693 states and 3195 transitions. Second operand 7 states. [2020-09-24 19:26:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:57,403 INFO L93 Difference]: Finished difference Result 5410 states and 6483 transitions. [2020-09-24 19:26:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:57,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-09-24 19:26:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:57,417 INFO L225 Difference]: With dead ends: 5410 [2020-09-24 19:26:57,417 INFO L226 Difference]: Without dead ends: 2560 [2020-09-24 19:26:57,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2020-09-24 19:26:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2483. [2020-09-24 19:26:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-09-24 19:26:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 2838 transitions. [2020-09-24 19:26:57,494 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 2838 transitions. Word has length 249 [2020-09-24 19:26:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:57,494 INFO L479 AbstractCegarLoop]: Abstraction has 2483 states and 2838 transitions. [2020-09-24 19:26:57,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 2838 transitions. [2020-09-24 19:26:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-24 19:26:57,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:57,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:57,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:57,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:57,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1102446521, now seen corresponding path program 1 times [2020-09-24 19:26:57,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:57,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610855026] [2020-09-24 19:26:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-24 19:26:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:26:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:26:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:26:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:26:58,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:26:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:26:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:26:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:26:58,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 19:26:58,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:26:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:59,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610855026] [2020-09-24 19:26:59,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:59,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:59,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456126825] [2020-09-24 19:26:59,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:59,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:59,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:59,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:59,113 INFO L87 Difference]: Start difference. First operand 2483 states and 2838 transitions. Second operand 7 states. [2020-09-24 19:27:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:01,308 INFO L93 Difference]: Finished difference Result 5583 states and 6470 transitions. [2020-09-24 19:27:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:27:01,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-09-24 19:27:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:01,323 INFO L225 Difference]: With dead ends: 5583 [2020-09-24 19:27:01,323 INFO L226 Difference]: Without dead ends: 3122 [2020-09-24 19:27:01,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:27:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-09-24 19:27:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2953. [2020-09-24 19:27:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2953 states. [2020-09-24 19:27:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3330 transitions. [2020-09-24 19:27:01,399 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3330 transitions. Word has length 261 [2020-09-24 19:27:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:01,400 INFO L479 AbstractCegarLoop]: Abstraction has 2953 states and 3330 transitions. [2020-09-24 19:27:01,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3330 transitions. [2020-09-24 19:27:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-24 19:27:01,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:01,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:01,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:27:01,411 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:01,412 INFO L82 PathProgramCache]: Analyzing trace with hash -432808293, now seen corresponding path program 1 times [2020-09-24 19:27:01,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:01,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405343076] [2020-09-24 19:27:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-09-24 19:27:02,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:27:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:27:02,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:27:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-24 19:27:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:27:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:27:02,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:27:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:27:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:27:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:27:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:27:03,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 19:27:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:27:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:27:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:27:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 19:27:03,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405343076] [2020-09-24 19:27:03,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:03,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:27:03,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404046778] [2020-09-24 19:27:03,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:27:03,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:03,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:27:03,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:27:03,653 INFO L87 Difference]: Start difference. First operand 2953 states and 3330 transitions. Second operand 10 states. [2020-09-24 19:27:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:07,515 INFO L93 Difference]: Finished difference Result 6865 states and 7873 transitions. [2020-09-24 19:27:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:27:07,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 282 [2020-09-24 19:27:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:07,526 INFO L225 Difference]: With dead ends: 6865 [2020-09-24 19:27:07,526 INFO L226 Difference]: Without dead ends: 2354 [2020-09-24 19:27:07,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:27:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2020-09-24 19:27:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2337. [2020-09-24 19:27:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-09-24 19:27:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2530 transitions. [2020-09-24 19:27:07,586 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2530 transitions. Word has length 282 [2020-09-24 19:27:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:07,587 INFO L479 AbstractCegarLoop]: Abstraction has 2337 states and 2530 transitions. [2020-09-24 19:27:07,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:27:07,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2530 transitions. [2020-09-24 19:27:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-24 19:27:07,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:07,598 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-09-24 19:27:07,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:27:07,598 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:07,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1087632074, now seen corresponding path program 1 times [2020-09-24 19:27:07,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:07,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836673037] [2020-09-24 19:27:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:08,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-09-24 19:27:08,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:27:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-24 19:27:08,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:27:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:27:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:08,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:08,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:08,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:27:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:27:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:27:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:27:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:27:08,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:27:08,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 19:27:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:09,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:09,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:27:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 19:27:09,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:27:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 19:27:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:27:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:27:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 19:27:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 295 proven. 29 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-09-24 19:27:09,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836673037] [2020-09-24 19:27:09,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:09,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:09,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131980603] [2020-09-24 19:27:09,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:09,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:09,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:09,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:09,496 INFO L87 Difference]: Start difference. First operand 2337 states and 2530 transitions. Second operand 7 states. [2020-09-24 19:27:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:10,807 INFO L93 Difference]: Finished difference Result 3962 states and 4245 transitions. [2020-09-24 19:27:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:27:10,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-09-24 19:27:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:10,813 INFO L225 Difference]: With dead ends: 3962 [2020-09-24 19:27:10,813 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 19:27:10,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:27:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 19:27:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1308. [2020-09-24 19:27:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-09-24 19:27:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1359 transitions. [2020-09-24 19:27:10,848 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1359 transitions. Word has length 369 [2020-09-24 19:27:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:10,848 INFO L479 AbstractCegarLoop]: Abstraction has 1308 states and 1359 transitions. [2020-09-24 19:27:10,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1359 transitions. [2020-09-24 19:27:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-24 19:27:10,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:10,856 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:10,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:27:10,857 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1869953008, now seen corresponding path program 1 times [2020-09-24 19:27:10,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:10,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670376433] [2020-09-24 19:27:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:11,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:11,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-09-24 19:27:11,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:27:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:27:11,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-09-24 19:27:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:27:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:12,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:27:12,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:27:12,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:27:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:27:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:27:12,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:27:12,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 19:27:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:27:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:27:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 19:27:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:27:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:27:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 19:27:12,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670376433] [2020-09-24 19:27:12,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:12,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:12,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561809365] [2020-09-24 19:27:12,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:12,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:12,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:12,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:12,440 INFO L87 Difference]: Start difference. First operand 1308 states and 1359 transitions. Second operand 7 states. [2020-09-24 19:27:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:13,895 INFO L93 Difference]: Finished difference Result 2280 states and 2388 transitions. [2020-09-24 19:27:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:27:13,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-09-24 19:27:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:13,897 INFO L225 Difference]: With dead ends: 2280 [2020-09-24 19:27:13,897 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:27:13,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:27:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:27:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:27:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:27:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:27:13,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 369 [2020-09-24 19:27:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:13,903 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:27:13,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:13,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:27:13,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:27:13,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:27:13,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:27:15,212 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 145 [2020-09-24 19:27:15,678 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 145 [2020-09-24 19:27:17,253 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2020-09-24 19:27:18,286 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 65