/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:54:47,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:54:47,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:54:47,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:54:47,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:54:47,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:54:47,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:54:47,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:54:47,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:54:47,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:54:47,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:54:47,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:54:47,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:54:47,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:54:47,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:54:47,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:54:47,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:54:47,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:54:47,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:54:47,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:54:47,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:54:47,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:54:47,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:54:47,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:54:47,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:54:47,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:54:47,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:54:47,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:54:47,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:54:47,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:54:47,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:54:47,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:54:47,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:54:47,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:54:47,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:54:47,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:54:47,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:54:47,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:54:47,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:54:47,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:54:47,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:54:47,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:54:47,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:54:47,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:54:47,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:54:47,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:54:47,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:54:47,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:54:47,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:54:47,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:54:47,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:54:47,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:54:47,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:54:47,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:54:47,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:54:47,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:54:47,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:54:47,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:54:47,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:54:47,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:54:47,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:54:47,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:54:47,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:54:47,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:54:47,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:54:47,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:54:47,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:54:48,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:54:48,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:54:48,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:54:48,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:54:48,180 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:54:48,180 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2020-10-13 09:54:48,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ec77409/6c5157ad171d4a9fb8b532f3e38aa57c/FLAG50070e624 [2020-10-13 09:54:48,951 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:54:48,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2020-10-13 09:54:48,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ec77409/6c5157ad171d4a9fb8b532f3e38aa57c/FLAG50070e624 [2020-10-13 09:54:49,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ec77409/6c5157ad171d4a9fb8b532f3e38aa57c [2020-10-13 09:54:49,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:54:49,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:54:49,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:54:49,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:54:49,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:54:49,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:49" (1/1) ... [2020-10-13 09:54:49,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:49, skipping insertion in model container [2020-10-13 09:54:49,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:49" (1/1) ... [2020-10-13 09:54:49,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:54:49,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:54:50,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:54:50,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:54:50,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:54:50,994 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:54:50,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50 WrapperNode [2020-10-13 09:54:50,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:54:50,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:54:50,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:54:50,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:54:51,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... [2020-10-13 09:54:51,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:54:51,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:54:51,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:54:51,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:54:51,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:54:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:54:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:54:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:54:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:54:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:54:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:54:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:54:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:54:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:54:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:54:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:54:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:54:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:54:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:54:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:54:57,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:54:57,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:54:57,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:57 BoogieIcfgContainer [2020-10-13 09:54:57,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:54:57,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:54:57,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:54:57,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:54:57,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:49" (1/3) ... [2020-10-13 09:54:57,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98039fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:57, skipping insertion in model container [2020-10-13 09:54:57,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:50" (2/3) ... [2020-10-13 09:54:57,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98039fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:57, skipping insertion in model container [2020-10-13 09:54:57,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:57" (3/3) ... [2020-10-13 09:54:57,119 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label50.c [2020-10-13 09:54:57,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:54:57,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:54:57,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:54:57,186 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:54:57,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:54:57,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:54:57,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:54:57,187 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:54:57,187 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:54:57,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:54:57,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:54:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:54:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 09:54:57,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:57,232 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] [2020-10-13 09:54:57,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:57,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash 118737362, now seen corresponding path program 1 times [2020-10-13 09:54:57,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:57,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305635641] [2020-10-13 09:54:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:54:57,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-13 09:54:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:54:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:54:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:54:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:54:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:58,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:58,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:58,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:58,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:54:58,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:54:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:54:58,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305635641] [2020-10-13 09:54:58,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:54:58,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:54:58,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250466327] [2020-10-13 09:54:58,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:54:58,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:58,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:54:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:54:58,116 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:55:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:08,345 INFO L93 Difference]: Finished difference Result 2984 states and 5767 transitions. [2020-10-13 09:55:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:55:08,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 09:55:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:08,379 INFO L225 Difference]: With dead ends: 2984 [2020-10-13 09:55:08,380 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:55:08,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:55:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:55:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:55:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:55:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3227 transitions. [2020-10-13 09:55:08,563 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3227 transitions. Word has length 69 [2020-10-13 09:55:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:08,564 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3227 transitions. [2020-10-13 09:55:08,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3227 transitions. [2020-10-13 09:55:08,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 09:55:08,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:08,571 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, 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] [2020-10-13 09:55:08,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:55:08,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2115577750, now seen corresponding path program 1 times [2020-10-13 09:55:08,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:08,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957694554] [2020-10-13 09:55:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:10,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:10,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:55:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:55:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-13 09:55:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:55:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:55:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:55:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:55:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:10,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:55:10,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:55:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:55:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:10,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957694554] [2020-10-13 09:55:10,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:10,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:55:10,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357871011] [2020-10-13 09:55:10,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:55:10,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:55:10,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:55:10,439 INFO L87 Difference]: Start difference. First operand 2135 states and 3227 transitions. Second operand 8 states. [2020-10-13 09:55:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:17,021 INFO L93 Difference]: Finished difference Result 4392 states and 6604 transitions. [2020-10-13 09:55:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:55:17,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-13 09:55:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:17,036 INFO L225 Difference]: With dead ends: 4392 [2020-10-13 09:55:17,037 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:55:17,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:55:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:55:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:55:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:55:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2643 transitions. [2020-10-13 09:55:17,102 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2643 transitions. Word has length 139 [2020-10-13 09:55:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:17,103 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 2643 transitions. [2020-10-13 09:55:17,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:55:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2643 transitions. [2020-10-13 09:55:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 09:55:17,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:17,108 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, 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] [2020-10-13 09:55:17,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:55:17,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash -882819362, now seen corresponding path program 1 times [2020-10-13 09:55:17,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:17,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064184038] [2020-10-13 09:55:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:17,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:17,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:55:17,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:55:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-13 09:55:17,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:55:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:55:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:17,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:17,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:17,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:17,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:17,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:17,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:55:17,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:17,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:55:17,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:17,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:55:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:55:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:17,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064184038] [2020-10-13 09:55:17,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:17,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:17,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969779919] [2020-10-13 09:55:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:17,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:17,951 INFO L87 Difference]: Start difference. First operand 2135 states and 2643 transitions. Second operand 5 states. [2020-10-13 09:55:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:23,252 INFO L93 Difference]: Finished difference Result 5691 states and 7143 transitions. [2020-10-13 09:55:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:23,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 09:55:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:23,272 INFO L225 Difference]: With dead ends: 5691 [2020-10-13 09:55:23,272 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:55:23,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:55:23,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:55:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:55:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:55:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4248 transitions. [2020-10-13 09:55:23,355 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4248 transitions. Word has length 143 [2020-10-13 09:55:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:23,356 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4248 transitions. [2020-10-13 09:55:23,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4248 transitions. [2020-10-13 09:55:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:55:23,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:23,359 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, 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] [2020-10-13 09:55:23,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:55:23,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1328569434, now seen corresponding path program 1 times [2020-10-13 09:55:23,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:23,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804427785] [2020-10-13 09:55:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:55:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:55:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-13 09:55:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:55:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:55:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:55:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:24,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:55:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:24,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:24,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:55:24,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:55:24,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:55:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:24,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804427785] [2020-10-13 09:55:24,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:24,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:24,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897573743] [2020-10-13 09:55:24,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:24,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:24,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:24,675 INFO L87 Difference]: Start difference. First operand 3558 states and 4248 transitions. Second operand 5 states. [2020-10-13 09:55:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:28,282 INFO L93 Difference]: Finished difference Result 7132 states and 8531 transitions. [2020-10-13 09:55:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:28,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 09:55:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:28,302 INFO L225 Difference]: With dead ends: 7132 [2020-10-13 09:55:28,302 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:55:28,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:55:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:55:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:55:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:55:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4243 transitions. [2020-10-13 09:55:28,392 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4243 transitions. Word has length 157 [2020-10-13 09:55:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:28,393 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4243 transitions. [2020-10-13 09:55:28,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4243 transitions. [2020-10-13 09:55:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 09:55:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:28,396 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, 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] [2020-10-13 09:55:28,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:55:28,397 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash -487622261, now seen corresponding path program 1 times [2020-10-13 09:55:28,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:28,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144025575] [2020-10-13 09:55:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:29,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:29,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:55:29,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:55:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-13 09:55:29,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:55:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:55:29,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:55:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:55:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:55:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:29,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144025575] [2020-10-13 09:55:29,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:29,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:29,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710060944] [2020-10-13 09:55:29,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:29,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:29,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:29,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:29,638 INFO L87 Difference]: Start difference. First operand 3558 states and 4243 transitions. Second operand 5 states. [2020-10-13 09:55:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:33,387 INFO L93 Difference]: Finished difference Result 7133 states and 8522 transitions. [2020-10-13 09:55:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:33,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 09:55:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:33,411 INFO L225 Difference]: With dead ends: 7133 [2020-10-13 09:55:33,416 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:55:33,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:55:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:55:33,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:55:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:55:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4238 transitions. [2020-10-13 09:55:33,502 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4238 transitions. Word has length 164 [2020-10-13 09:55:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:33,503 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4238 transitions. [2020-10-13 09:55:33,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4238 transitions. [2020-10-13 09:55:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 09:55:33,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:33,507 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, 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] [2020-10-13 09:55:33,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:55:33,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:33,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1292965438, now seen corresponding path program 1 times [2020-10-13 09:55:33,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:33,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094600716] [2020-10-13 09:55:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:55:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:55:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-13 09:55:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:55:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:55:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:55:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:55:34,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:55:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:55:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:34,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094600716] [2020-10-13 09:55:34,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:34,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:34,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713524756] [2020-10-13 09:55:34,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:34,889 INFO L87 Difference]: Start difference. First operand 3558 states and 4238 transitions. Second operand 5 states. [2020-10-13 09:55:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:40,328 INFO L93 Difference]: Finished difference Result 9248 states and 11238 transitions. [2020-10-13 09:55:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:40,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-13 09:55:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:40,349 INFO L225 Difference]: With dead ends: 9248 [2020-10-13 09:55:40,349 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:55:40,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:55:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:55:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:55:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:55:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6672 transitions. [2020-10-13 09:55:40,456 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6672 transitions. Word has length 191 [2020-10-13 09:55:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:40,457 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6672 transitions. [2020-10-13 09:55:40,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6672 transitions. [2020-10-13 09:55:40,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 09:55:40,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:40,462 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, 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, 1] [2020-10-13 09:55:40,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:55:40,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash 222562706, now seen corresponding path program 1 times [2020-10-13 09:55:40,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:40,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142906633] [2020-10-13 09:55:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:41,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:41,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 09:55:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:55:41,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-13 09:55:41,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:55:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:55:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:41,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:41,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:41,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:55:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 09:55:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:55:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:42,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142906633] [2020-10-13 09:55:42,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:42,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:42,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162740779] [2020-10-13 09:55:42,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:42,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:42,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:42,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:42,084 INFO L87 Difference]: Start difference. First operand 5685 states and 6672 transitions. Second operand 5 states. [2020-10-13 09:55:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:45,938 INFO L93 Difference]: Finished difference Result 11403 states and 13413 transitions. [2020-10-13 09:55:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:45,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-13 09:55:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:45,959 INFO L225 Difference]: With dead ends: 11403 [2020-10-13 09:55:45,960 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:55:45,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:55:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:55:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:55:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:55:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6667 transitions. [2020-10-13 09:55:46,070 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6667 transitions. Word has length 217 [2020-10-13 09:55:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:46,071 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6667 transitions. [2020-10-13 09:55:46,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6667 transitions. [2020-10-13 09:55:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 09:55:46,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:46,076 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, 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, 1, 1, 1] [2020-10-13 09:55:46,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:55:46,076 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1482668342, now seen corresponding path program 1 times [2020-10-13 09:55:46,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:46,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716937017] [2020-10-13 09:55:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:55:47,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:55:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-13 09:55:47,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:55:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:55:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:47,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:47,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:55:47,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:47,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:55:47,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:55:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:55:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:48,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716937017] [2020-10-13 09:55:48,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:48,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:48,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935216376] [2020-10-13 09:55:48,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:48,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:48,045 INFO L87 Difference]: Start difference. First operand 5685 states and 6667 transitions. Second operand 5 states. [2020-10-13 09:55:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:55:51,816 INFO L93 Difference]: Finished difference Result 11397 states and 13397 transitions. [2020-10-13 09:55:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:55:51,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 09:55:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:55:51,843 INFO L225 Difference]: With dead ends: 11397 [2020-10-13 09:55:51,843 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:55:51,853 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 [2020-10-13 09:55:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:55:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:55:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:55:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6662 transitions. [2020-10-13 09:55:51,956 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6662 transitions. Word has length 219 [2020-10-13 09:55:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:55:51,957 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6662 transitions. [2020-10-13 09:55:51,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:55:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6662 transitions. [2020-10-13 09:55:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 09:55:51,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:51,964 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:55:51,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:55:51,964 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:51,965 INFO L82 PathProgramCache]: Analyzing trace with hash -940737870, now seen corresponding path program 1 times [2020-10-13 09:55:51,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:51,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518579115] [2020-10-13 09:55:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-13 09:55:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:55:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4170 [2020-10-13 09:55:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 09:55:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:55:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:55:56,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:56,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:55:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:55:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:55:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:56,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:56,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:55:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:55:56,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:56,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:55:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:55:56,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518579115] [2020-10-13 09:55:56,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:56,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:55:56,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430119624] [2020-10-13 09:55:56,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:56,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:56,586 INFO L87 Difference]: Start difference. First operand 5685 states and 6662 transitions. Second operand 5 states. [2020-10-13 09:56:00,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:00,190 INFO L93 Difference]: Finished difference Result 11407 states and 13393 transitions. [2020-10-13 09:56:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:00,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-13 09:56:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:00,210 INFO L225 Difference]: With dead ends: 11407 [2020-10-13 09:56:00,210 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:00,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6660 transitions. [2020-10-13 09:56:00,298 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6660 transitions. Word has length 285 [2020-10-13 09:56:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:00,298 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6660 transitions. [2020-10-13 09:56:00,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6660 transitions. [2020-10-13 09:56:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 09:56:00,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:00,305 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:00,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:56:00,306 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:00,306 INFO L82 PathProgramCache]: Analyzing trace with hash -692156497, now seen corresponding path program 1 times [2020-10-13 09:56:00,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:00,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776772738] [2020-10-13 09:56:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:05,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 09:56:05,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:56:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:56:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-13 09:56:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:56:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:05,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:05,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:56:05,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:56:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:56:05,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:56:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:56:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:56:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:56:05,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:56:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 09:56:05,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776772738] [2020-10-13 09:56:05,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:05,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:05,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135313137] [2020-10-13 09:56:05,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:05,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:05,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:05,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:05,885 INFO L87 Difference]: Start difference. First operand 5685 states and 6660 transitions. Second operand 5 states. [2020-10-13 09:56:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:10,171 INFO L93 Difference]: Finished difference Result 11390 states and 13374 transitions. [2020-10-13 09:56:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:10,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-10-13 09:56:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:10,186 INFO L225 Difference]: With dead ends: 11390 [2020-10-13 09:56:10,186 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:10,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6656 transitions. [2020-10-13 09:56:10,285 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6656 transitions. Word has length 294 [2020-10-13 09:56:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:10,286 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6656 transitions. [2020-10-13 09:56:10,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6656 transitions. [2020-10-13 09:56:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 09:56:10,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:10,296 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:10,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:56:10,297 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1556902557, now seen corresponding path program 1 times [2020-10-13 09:56:10,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:10,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407084679] [2020-10-13 09:56:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:13,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 09:56:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:56:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2741 [2020-10-13 09:56:13,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:56:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:56:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:13,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:13,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:13,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:56:13,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:13,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:13,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:13,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:56:13,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:56:13,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:56:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:13,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:13,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:56:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:56:13,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407084679] [2020-10-13 09:56:13,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:13,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:13,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841453434] [2020-10-13 09:56:13,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:13,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:13,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:13,471 INFO L87 Difference]: Start difference. First operand 5685 states and 6656 transitions. Second operand 5 states. [2020-10-13 09:56:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:17,494 INFO L93 Difference]: Finished difference Result 11398 states and 13372 transitions. [2020-10-13 09:56:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:17,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 09:56:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:17,509 INFO L225 Difference]: With dead ends: 11398 [2020-10-13 09:56:17,509 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:17,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6654 transitions. [2020-10-13 09:56:17,609 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6654 transitions. Word has length 304 [2020-10-13 09:56:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:17,609 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6654 transitions. [2020-10-13 09:56:17,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6654 transitions. [2020-10-13 09:56:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-13 09:56:17,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:17,624 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, 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, 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] [2020-10-13 09:56:17,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:56:17,625 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1960270522, now seen corresponding path program 1 times [2020-10-13 09:56:17,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:17,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618470390] [2020-10-13 09:56:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:17,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:21,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3405 [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 328 [2020-10-13 09:56:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:56:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:56:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:21,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:56:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:56:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:56:21,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618470390] [2020-10-13 09:56:21,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:21,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:21,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839515632] [2020-10-13 09:56:21,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:21,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:21,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:21,445 INFO L87 Difference]: Start difference. First operand 5685 states and 6654 transitions. Second operand 5 states. [2020-10-13 09:56:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:25,463 INFO L93 Difference]: Finished difference Result 11384 states and 13354 transitions. [2020-10-13 09:56:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:25,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 385 [2020-10-13 09:56:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:25,474 INFO L225 Difference]: With dead ends: 11384 [2020-10-13 09:56:25,474 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:25,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6652 transitions. [2020-10-13 09:56:25,564 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6652 transitions. Word has length 385 [2020-10-13 09:56:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:25,565 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6652 transitions. [2020-10-13 09:56:25,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6652 transitions. [2020-10-13 09:56:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 09:56:25,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:25,578 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, 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, 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] [2020-10-13 09:56:25,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:56:25,579 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:25,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:25,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1495489749, now seen corresponding path program 1 times [2020-10-13 09:56:25,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:25,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896302052] [2020-10-13 09:56:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:29,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-13 09:56:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:56:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3507 [2020-10-13 09:56:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-13 09:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:56:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:56:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:29,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:56:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:56:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:56:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:56:29,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896302052] [2020-10-13 09:56:29,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:29,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:56:29,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685363102] [2020-10-13 09:56:29,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:56:29,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:29,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:56:29,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:56:29,639 INFO L87 Difference]: Start difference. First operand 5685 states and 6652 transitions. Second operand 8 states. [2020-10-13 09:56:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:34,189 INFO L93 Difference]: Finished difference Result 11428 states and 13394 transitions. [2020-10-13 09:56:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:56:34,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 404 [2020-10-13 09:56:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:34,209 INFO L225 Difference]: With dead ends: 11428 [2020-10-13 09:56:34,209 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:34,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:56:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6650 transitions. [2020-10-13 09:56:34,319 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6650 transitions. Word has length 404 [2020-10-13 09:56:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:34,320 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6650 transitions. [2020-10-13 09:56:34,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:56:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6650 transitions. [2020-10-13 09:56:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-13 09:56:34,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:34,335 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:34,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:56:34,335 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1076654243, now seen corresponding path program 1 times [2020-10-13 09:56:34,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:34,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850581648] [2020-10-13 09:56:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:56:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:36,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:36,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:56:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:36,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:36,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:56:36,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:56:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:56:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:56:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:56:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:56:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:56:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:56:36,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850581648] [2020-10-13 09:56:36,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254302334] [2020-10-13 09:56:36,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:36,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:36,807 INFO L87 Difference]: Start difference. First operand 5685 states and 6650 transitions. Second operand 5 states. [2020-10-13 09:56:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:40,534 INFO L93 Difference]: Finished difference Result 11407 states and 13377 transitions. [2020-10-13 09:56:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:40,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-10-13 09:56:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:40,547 INFO L225 Difference]: With dead ends: 11407 [2020-10-13 09:56:40,547 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:40,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:40,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6645 transitions. [2020-10-13 09:56:40,619 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6645 transitions. Word has length 460 [2020-10-13 09:56:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:40,620 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6645 transitions. [2020-10-13 09:56:40,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6645 transitions. [2020-10-13 09:56:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-13 09:56:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:40,630 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:40,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:56:40,630 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash -105229807, now seen corresponding path program 1 times [2020-10-13 09:56:40,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:40,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117526378] [2020-10-13 09:56:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:45,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 444 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:56:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:45,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:56:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:56:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:56:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-13 09:56:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:56:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:46,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 09:56:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:56:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:56:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:56:46,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117526378] [2020-10-13 09:56:46,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:46,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:46,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158039253] [2020-10-13 09:56:46,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:46,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:46,353 INFO L87 Difference]: Start difference. First operand 5685 states and 6645 transitions. Second operand 5 states. [2020-10-13 09:56:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:49,965 INFO L93 Difference]: Finished difference Result 11388 states and 13341 transitions. [2020-10-13 09:56:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:49,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 502 [2020-10-13 09:56:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:49,982 INFO L225 Difference]: With dead ends: 11388 [2020-10-13 09:56:49,982 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:56:49,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:56:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:56:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:56:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6643 transitions. [2020-10-13 09:56:50,049 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6643 transitions. Word has length 502 [2020-10-13 09:56:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:50,049 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6643 transitions. [2020-10-13 09:56:50,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6643 transitions. [2020-10-13 09:56:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-13 09:56:50,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:50,061 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:50,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:56:50,062 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:50,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:50,062 INFO L82 PathProgramCache]: Analyzing trace with hash -249819859, now seen corresponding path program 1 times [2020-10-13 09:56:50,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:50,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968714077] [2020-10-13 09:56:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:55,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-13 09:56:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:56:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:56:55,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:56:55,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:56:55,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:56:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:55,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:56:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:56:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:55,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:56:55,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:56:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:56:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:56:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:56:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:55,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:56:55,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:56:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-13 09:56:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:56:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:55,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:55,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:56:55,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 124 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:56:56,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968714077] [2020-10-13 09:56:56,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:56,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:56:56,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649836785] [2020-10-13 09:56:56,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:56:56,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:56,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:56:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:56:56,040 INFO L87 Difference]: Start difference. First operand 5685 states and 6643 transitions. Second operand 8 states. [2020-10-13 09:57:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:04,868 INFO L93 Difference]: Finished difference Result 11446 states and 13400 transitions. [2020-10-13 09:57:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:57:04,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 559 [2020-10-13 09:57:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:04,885 INFO L225 Difference]: With dead ends: 11446 [2020-10-13 09:57:04,885 INFO L226 Difference]: Without dead ends: 5767 [2020-10-13 09:57:04,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:57:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2020-10-13 09:57:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5753. [2020-10-13 09:57:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5753 states. [2020-10-13 09:57:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 6277 transitions. [2020-10-13 09:57:04,954 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 6277 transitions. Word has length 559 [2020-10-13 09:57:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:04,955 INFO L479 AbstractCegarLoop]: Abstraction has 5753 states and 6277 transitions. [2020-10-13 09:57:04,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:57:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 6277 transitions. [2020-10-13 09:57:04,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-13 09:57:04,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:04,964 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:57:04,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:57:04,965 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:04,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:04,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1031840067, now seen corresponding path program 1 times [2020-10-13 09:57:04,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:04,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369776577] [2020-10-13 09:57:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-13 09:57:10,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:57:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:57:10,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:57:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:57:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:57:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:57:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:10,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:10,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:57:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 09:57:10,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:10,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:10,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:57:10,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:57:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:11,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:57:11,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-13 09:57:11,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:11,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:57:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:11,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:11,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:57:11,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:57:11,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 124 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:57:11,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369776577] [2020-10-13 09:57:11,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:11,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:11,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125041470] [2020-10-13 09:57:11,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:11,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:11,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:11,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:11,692 INFO L87 Difference]: Start difference. First operand 5753 states and 6277 transitions. Second operand 7 states. [2020-10-13 09:57:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:17,510 INFO L93 Difference]: Finished difference Result 12232 states and 13322 transitions. [2020-10-13 09:57:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:57:17,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 583 [2020-10-13 09:57:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:17,527 INFO L225 Difference]: With dead ends: 12232 [2020-10-13 09:57:17,527 INFO L226 Difference]: Without dead ends: 6485 [2020-10-13 09:57:17,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:57:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2020-10-13 09:57:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6465. [2020-10-13 09:57:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6465 states. [2020-10-13 09:57:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6465 states to 6465 states and 6997 transitions. [2020-10-13 09:57:17,599 INFO L78 Accepts]: Start accepts. Automaton has 6465 states and 6997 transitions. Word has length 583 [2020-10-13 09:57:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:17,600 INFO L479 AbstractCegarLoop]: Abstraction has 6465 states and 6997 transitions. [2020-10-13 09:57:17,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:57:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6465 states and 6997 transitions. [2020-10-13 09:57:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2020-10-13 09:57:17,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:17,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1] [2020-10-13 09:57:17,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:57:17,615 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:17,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash 158830982, now seen corresponding path program 1 times [2020-10-13 09:57:17,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:17,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661115760] [2020-10-13 09:57:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-13 09:57:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 09:57:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:22,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:22,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:22,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:57:22,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:22,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:23,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:23,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:57:23,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 09:57:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-13 09:57:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:24,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-13 09:57:24,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:57:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:24,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:57:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:57:24,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:57:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:57:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:24,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:57:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:57:24,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:57:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-13 09:57:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:24,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:24,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:57:24,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 09:57:24,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:57:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:25,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:25,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:25,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:57:25,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:57:25,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 309 proven. 124 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2020-10-13 09:57:26,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661115760] [2020-10-13 09:57:26,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:26,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:26,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225246771] [2020-10-13 09:57:26,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:26,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:26,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:26,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:26,066 INFO L87 Difference]: Start difference. First operand 6465 states and 6997 transitions. Second operand 7 states. [2020-10-13 09:57:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:33,522 INFO L93 Difference]: Finished difference Result 13731 states and 14902 transitions. [2020-10-13 09:57:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:57:33,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1110 [2020-10-13 09:57:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:33,540 INFO L225 Difference]: With dead ends: 13731 [2020-10-13 09:57:33,541 INFO L226 Difference]: Without dead ends: 7974 [2020-10-13 09:57:33,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:57:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7974 states. [2020-10-13 09:57:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7974 to 7929. [2020-10-13 09:57:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7929 states. [2020-10-13 09:57:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7929 states to 7929 states and 8486 transitions. [2020-10-13 09:57:33,634 INFO L78 Accepts]: Start accepts. Automaton has 7929 states and 8486 transitions. Word has length 1110 [2020-10-13 09:57:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:33,635 INFO L479 AbstractCegarLoop]: Abstraction has 7929 states and 8486 transitions. [2020-10-13 09:57:33,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:57:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7929 states and 8486 transitions. [2020-10-13 09:57:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1418 [2020-10-13 09:57:33,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:33,652 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:57:33,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:57:33,652 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:33,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1053078329, now seen corresponding path program 1 times [2020-10-13 09:57:33,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:33,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34982850] [2020-10-13 09:57:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1441 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-13 09:57:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:57:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:39,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:57:39,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:57:39,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:57:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:57:39,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:57:39,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:57:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 09:57:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:57:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:57:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:57:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:57:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:57:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:57:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:57:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-13 09:57:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:40,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:57:40,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:57:40,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:57:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 502 proven. 124 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2020-10-13 09:57:41,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34982850] [2020-10-13 09:57:41,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:41,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:41,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729766737] [2020-10-13 09:57:41,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:41,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:41,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:41,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:41,086 INFO L87 Difference]: Start difference. First operand 7929 states and 8486 transitions. Second operand 7 states. [2020-10-13 09:57:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:52,549 INFO L93 Difference]: Finished difference Result 21856 states and 23754 transitions. [2020-10-13 09:57:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:57:52,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1417 [2020-10-13 09:57:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:52,580 INFO L225 Difference]: With dead ends: 21856 [2020-10-13 09:57:52,580 INFO L226 Difference]: Without dead ends: 14635 [2020-10-13 09:57:52,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:57:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2020-10-13 09:57:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 13111. [2020-10-13 09:57:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13111 states. [2020-10-13 09:57:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13111 states to 13111 states and 13928 transitions. [2020-10-13 09:57:52,763 INFO L78 Accepts]: Start accepts. Automaton has 13111 states and 13928 transitions. Word has length 1417 [2020-10-13 09:57:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:52,764 INFO L479 AbstractCegarLoop]: Abstraction has 13111 states and 13928 transitions. [2020-10-13 09:57:52,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:57:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13111 states and 13928 transitions. [2020-10-13 09:57:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2020-10-13 09:57:52,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:52,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:57:52,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:57:52,795 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 645197431, now seen corresponding path program 1 times [2020-10-13 09:57:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690078309] [2020-10-13 09:57:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1519 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:57:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:57:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:57:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:57:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 09:57:58,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:57:58,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:57:58,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:57:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:57:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:57:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-13 09:57:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:57:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2020-10-13 09:57:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:57:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:59,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1986 backedges. 480 proven. 151 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2020-10-13 09:58:00,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690078309] [2020-10-13 09:58:00,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:58:00,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:58:00,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707403810] [2020-10-13 09:58:00,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:58:00,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:58:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:58:00,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:58:00,225 INFO L87 Difference]: Start difference. First operand 13111 states and 13928 transitions. Second operand 7 states. [2020-10-13 09:58:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:58:08,031 INFO L93 Difference]: Finished difference Result 36492 states and 39440 transitions. [2020-10-13 09:58:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:58:08,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1493 [2020-10-13 09:58:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:58:08,077 INFO L225 Difference]: With dead ends: 36492 [2020-10-13 09:58:08,077 INFO L226 Difference]: Without dead ends: 24089 [2020-10-13 09:58:08,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:58:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24089 states. [2020-10-13 09:58:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24089 to 23296. [2020-10-13 09:58:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23296 states. [2020-10-13 09:58:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23296 states to 23296 states and 25127 transitions. [2020-10-13 09:58:08,377 INFO L78 Accepts]: Start accepts. Automaton has 23296 states and 25127 transitions. Word has length 1493 [2020-10-13 09:58:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:58:08,378 INFO L479 AbstractCegarLoop]: Abstraction has 23296 states and 25127 transitions. [2020-10-13 09:58:08,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:58:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 23296 states and 25127 transitions. [2020-10-13 09:58:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1573 [2020-10-13 09:58:08,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:58:08,406 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:58:08,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:58:08,406 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:58:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:58:08,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1778994508, now seen corresponding path program 1 times [2020-10-13 09:58:08,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:58:08,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695176732] [2020-10-13 09:58:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:58:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:13,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1598 [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1526 [2020-10-13 09:58:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:58:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:58:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:58:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:58:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:58:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:58:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:58:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:58:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-13 09:58:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:58:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:58:14,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-13 09:58:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-13 09:58:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:15,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:58:15,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:58:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:58:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:58:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:58:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 323 proven. 5 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2020-10-13 09:58:16,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695176732] [2020-10-13 09:58:16,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:58:16,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:58:16,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519745489] [2020-10-13 09:58:16,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:58:16,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:58:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:58:16,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:58:16,527 INFO L87 Difference]: Start difference. First operand 23296 states and 25127 transitions. Second operand 6 states. [2020-10-13 09:58:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:58:25,942 INFO L93 Difference]: Finished difference Result 53018 states and 58149 transitions. [2020-10-13 09:58:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:58:25,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1572 [2020-10-13 09:58:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:58:25,987 INFO L225 Difference]: With dead ends: 53018 [2020-10-13 09:58:25,987 INFO L226 Difference]: Without dead ends: 28267 [2020-10-13 09:58:26,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:58:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28267 states. [2020-10-13 09:58:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28267 to 28247. [2020-10-13 09:58:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28247 states. [2020-10-13 09:58:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28247 states to 28247 states and 30582 transitions. [2020-10-13 09:58:26,287 INFO L78 Accepts]: Start accepts. Automaton has 28247 states and 30582 transitions. Word has length 1572 [2020-10-13 09:58:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:58:26,288 INFO L479 AbstractCegarLoop]: Abstraction has 28247 states and 30582 transitions. [2020-10-13 09:58:26,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:58:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28247 states and 30582 transitions. [2020-10-13 09:58:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-13 09:58:26,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:58:26,327 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2020-10-13 09:58:26,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:58:26,327 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:58:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:58:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1589253615, now seen corresponding path program 1 times [2020-10-13 09:58:26,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:58:26,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890024316] [2020-10-13 09:58:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:58:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking...