/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem04_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:02:13,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:02:13,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:02:13,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:02:13,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:02:13,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:02:13,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:02:13,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:02:13,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:02:13,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:02:13,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:02:13,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:02:13,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:02:13,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:02:13,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:02:13,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:02:13,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:02:13,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:02:13,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:02:13,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:02:13,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:02:13,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:02:13,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:02:13,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:02:13,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:02:13,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:02:13,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:02:13,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:02:13,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:02:13,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:02:13,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:02:13,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:02:13,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:02:13,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:02:13,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:02:13,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:02:13,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:02:13,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:02:13,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:02:13,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:02:13,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:02:13,950 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 [2020-10-14 01:02:13,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:02:13,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:02:13,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:02:13,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:02:13,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:02:13,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:02:13,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:02:13,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:02:13,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:02:13,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:02:13,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:02:13,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:02:13,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:02:13,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:02:13,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:02:13,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:02:14,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:02:14,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:02:14,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:02:14,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:02:14,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:02:14,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:02:14,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:02:14,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:02:14,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:02:14,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:02:14,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:02:14,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:02:14,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:02:14,002 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:02:14,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:02:14,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:02:14,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:02:14,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:02:14,336 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:02:14,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2020-10-14 01:02:14,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ab2ea86/376929dbbdb44832b8db658638e09699/FLAGb86325bcf [2020-10-14 01:02:15,228 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:02:15,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2020-10-14 01:02:15,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ab2ea86/376929dbbdb44832b8db658638e09699/FLAGb86325bcf [2020-10-14 01:02:15,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ab2ea86/376929dbbdb44832b8db658638e09699 [2020-10-14 01:02:15,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:02:15,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:02:15,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:15,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:02:15,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:02:15,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:15" (1/1) ... [2020-10-14 01:02:15,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc8acdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:15, skipping insertion in model container [2020-10-14 01:02:15,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:15" (1/1) ... [2020-10-14 01:02:15,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:02:15,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:02:17,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:17,415 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:02:18,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:18,249 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:02:18,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18 WrapperNode [2020-10-14 01:02:18,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:18,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:02:18,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:02:18,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:02:18,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (1/1) ... [2020-10-14 01:02:18,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:02:18,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:02:18,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:02:18,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:02:18,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (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 [2020-10-14 01:02:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:02:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:02:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:02:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:02:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:02:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:02:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:02:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:02:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:02:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:02:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:02:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:02:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:02:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:02:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:02:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:02:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:02:22,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:02:22,723 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:02:22,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:22 BoogieIcfgContainer [2020-10-14 01:02:22,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:02:22,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:02:22,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:02:22,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:02:22,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:02:15" (1/3) ... [2020-10-14 01:02:22,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8bd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:22, skipping insertion in model container [2020-10-14 01:02:22,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:18" (2/3) ... [2020-10-14 01:02:22,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8bd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:22, skipping insertion in model container [2020-10-14 01:02:22,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:22" (3/3) ... [2020-10-14 01:02:22,747 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label21.c [2020-10-14 01:02:22,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:02:22,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:02:22,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:02:22,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:02:22,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:02:22,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:02:22,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:02:22,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:02:22,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:02:22,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:02:22,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:02:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:02:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-14 01:02:22,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:22,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:22,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash 449962387, now seen corresponding path program 1 times [2020-10-14 01:02:22,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:22,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102721598] [2020-10-14 01:02:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-14 01:02:29,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:02:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5499 [2020-10-14 01:02:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:29,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:02:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:02:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 816 [2020-10-14 01:02:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:02:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:30,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:02:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:30,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:02:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:02:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:02:31,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102721598] [2020-10-14 01:02:31,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:02:31,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:02:31,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079148292] [2020-10-14 01:02:31,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:02:31,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:02:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:02:31,509 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 01:02:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:39,489 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:02:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:02:39,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 808 [2020-10-14 01:02:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:39,553 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:02:39,554 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:02:39,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:02:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:02:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:02:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:02:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2020-10-14 01:02:39,776 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 808 [2020-10-14 01:02:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:39,780 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2020-10-14 01:02:39,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:02:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2020-10-14 01:02:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-14 01:02:39,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:39,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:39,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:02:39,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1836484382, now seen corresponding path program 1 times [2020-10-14 01:02:39,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:39,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219419040] [2020-10-14 01:02:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:45,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:45,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-14 01:02:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:02:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 01:02:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:45,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:02:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:02:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:02:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 01:02:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:45,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:02:45,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:45,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:02:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:02:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:02:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:45,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:45,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:02:45,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:02:45,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:45,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:02:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:02:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:02:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:02:46,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219419040] [2020-10-14 01:02:46,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:02:46,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:02:46,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036167270] [2020-10-14 01:02:46,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:02:46,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:46,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:02:46,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:02:46,415 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand 7 states. [2020-10-14 01:02:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:55,824 INFO L93 Difference]: Finished difference Result 4332 states and 7583 transitions. [2020-10-14 01:02:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:02:55,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 816 [2020-10-14 01:02:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:55,846 INFO L225 Difference]: With dead ends: 4332 [2020-10-14 01:02:55,847 INFO L226 Difference]: Without dead ends: 2649 [2020-10-14 01:02:55,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:02:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-14 01:02:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2567. [2020-10-14 01:02:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2020-10-14 01:02:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 4025 transitions. [2020-10-14 01:02:55,970 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 4025 transitions. Word has length 816 [2020-10-14 01:02:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:55,970 INFO L479 AbstractCegarLoop]: Abstraction has 2567 states and 4025 transitions. [2020-10-14 01:02:55,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:02:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 4025 transitions. [2020-10-14 01:02:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-14 01:02:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:55,992 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:55,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:02:55,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1761987944, now seen corresponding path program 1 times [2020-10-14 01:02:55,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:55,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087700541] [2020-10-14 01:02:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-14 01:03:01,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:03:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 01:03:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:01,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:03:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:03:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:03:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:03:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:01,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:03:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:01,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:01,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:03:01,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:03:01,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:01,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:03:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:03:02,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087700541] [2020-10-14 01:03:02,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:03:02,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:03:02,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2742055] [2020-10-14 01:03:02,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:02,485 INFO L87 Difference]: Start difference. First operand 2567 states and 4025 transitions. Second operand 7 states. [2020-10-14 01:03:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:13,264 INFO L93 Difference]: Finished difference Result 7066 states and 11026 transitions. [2020-10-14 01:03:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:03:13,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 825 [2020-10-14 01:03:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:13,293 INFO L225 Difference]: With dead ends: 7066 [2020-10-14 01:03:13,293 INFO L226 Difference]: Without dead ends: 4505 [2020-10-14 01:03:13,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:03:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2020-10-14 01:03:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4349. [2020-10-14 01:03:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4349 states. [2020-10-14 01:03:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 6142 transitions. [2020-10-14 01:03:13,467 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 6142 transitions. Word has length 825 [2020-10-14 01:03:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:13,468 INFO L479 AbstractCegarLoop]: Abstraction has 4349 states and 6142 transitions. [2020-10-14 01:03:13,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 6142 transitions. [2020-10-14 01:03:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-14 01:03:13,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:13,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:03:13,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:03:13,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:13,507 INFO L82 PathProgramCache]: Analyzing trace with hash 34499315, now seen corresponding path program 1 times [2020-10-14 01:03:13,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:13,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840976777] [2020-10-14 01:03:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 853 [2020-10-14 01:03:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:03:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5279 [2020-10-14 01:03:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:03:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:19,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:19,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:03:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:19,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 01:03:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:19,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:03:19,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:03:19,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:19,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:03:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:03:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:03:19,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840976777] [2020-10-14 01:03:19,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:19,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:19,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302059966] [2020-10-14 01:03:19,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:19,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:19,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:19,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:19,701 INFO L87 Difference]: Start difference. First operand 4349 states and 6142 transitions. Second operand 7 states. [2020-10-14 01:03:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:30,213 INFO L93 Difference]: Finished difference Result 9779 states and 14125 transitions. [2020-10-14 01:03:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:03:30,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 835 [2020-10-14 01:03:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:30,241 INFO L225 Difference]: With dead ends: 9779 [2020-10-14 01:03:30,241 INFO L226 Difference]: Without dead ends: 5436 [2020-10-14 01:03:30,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2020-10-14 01:03:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5287. [2020-10-14 01:03:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2020-10-14 01:03:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7324 transitions. [2020-10-14 01:03:30,402 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7324 transitions. Word has length 835 [2020-10-14 01:03:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:30,403 INFO L479 AbstractCegarLoop]: Abstraction has 5287 states and 7324 transitions. [2020-10-14 01:03:30,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7324 transitions. [2020-10-14 01:03:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-14 01:03:30,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:30,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:03:30,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:03:30,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1458740266, now seen corresponding path program 1 times [2020-10-14 01:03:30,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:30,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743482674] [2020-10-14 01:03:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-14 01:03:35,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:03:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-14 01:03:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:03:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:35,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:03:35,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:03:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:03:35,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:03:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 01:03:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:03:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 01:03:36,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743482674] [2020-10-14 01:03:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:03:36,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280634104] [2020-10-14 01:03:36,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:03:36,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:03:36,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:03:36,148 INFO L87 Difference]: Start difference. First operand 5287 states and 7324 transitions. Second operand 8 states. [2020-10-14 01:03:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:49,790 INFO L93 Difference]: Finished difference Result 16983 states and 25584 transitions. [2020-10-14 01:03:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:03:49,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 844 [2020-10-14 01:03:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:49,851 INFO L225 Difference]: With dead ends: 16983 [2020-10-14 01:03:49,851 INFO L226 Difference]: Without dead ends: 11702 [2020-10-14 01:03:49,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:03:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11702 states. [2020-10-14 01:03:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11702 to 11655. [2020-10-14 01:03:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11655 states. [2020-10-14 01:03:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11655 states to 11655 states and 16392 transitions. [2020-10-14 01:03:50,148 INFO L78 Accepts]: Start accepts. Automaton has 11655 states and 16392 transitions. Word has length 844 [2020-10-14 01:03:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:50,149 INFO L479 AbstractCegarLoop]: Abstraction has 11655 states and 16392 transitions. [2020-10-14 01:03:50,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:03:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11655 states and 16392 transitions. [2020-10-14 01:03:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-14 01:03:50,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:50,202 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:03:50,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:03:50,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:50,204 INFO L82 PathProgramCache]: Analyzing trace with hash 601083386, now seen corresponding path program 1 times [2020-10-14 01:03:50,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:50,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163731611] [2020-10-14 01:03:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:55,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 942 [2020-10-14 01:03:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:03:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-14 01:03:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:55,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:03:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 01:03:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:55,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:55,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:55,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:03:55,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:03:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:55,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:03:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:03:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:55,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:55,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 01:03:55,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 01:03:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:03:56,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163731611] [2020-10-14 01:03:56,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:56,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:56,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311519918] [2020-10-14 01:03:56,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:56,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:56,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:56,258 INFO L87 Difference]: Start difference. First operand 11655 states and 16392 transitions. Second operand 7 states. [2020-10-14 01:04:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:10,914 INFO L93 Difference]: Finished difference Result 28757 states and 41556 transitions. [2020-10-14 01:04:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:04:10,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 922 [2020-10-14 01:04:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:10,974 INFO L225 Difference]: With dead ends: 28757 [2020-10-14 01:04:10,975 INFO L226 Difference]: Without dead ends: 17108 [2020-10-14 01:04:11,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:04:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17108 states. [2020-10-14 01:04:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17108 to 16974. [2020-10-14 01:04:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16974 states. [2020-10-14 01:04:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16974 states to 16974 states and 22134 transitions. [2020-10-14 01:04:12,386 INFO L78 Accepts]: Start accepts. Automaton has 16974 states and 22134 transitions. Word has length 922 [2020-10-14 01:04:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:12,387 INFO L479 AbstractCegarLoop]: Abstraction has 16974 states and 22134 transitions. [2020-10-14 01:04:12,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 16974 states and 22134 transitions. [2020-10-14 01:04:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-14 01:04:12,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:12,445 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:04:12,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:04:12,445 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:12,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1534520673, now seen corresponding path program 1 times [2020-10-14 01:04:12,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:12,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252737419] [2020-10-14 01:04:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:17,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:17,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-14 01:04:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:04:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-14 01:04:17,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:17,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:04:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:04:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 940 [2020-10-14 01:04:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:04:18,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:18,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:18,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:04:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:04:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 01:04:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:18,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:04:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:04:19,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252737419] [2020-10-14 01:04:19,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:19,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:04:19,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409441612] [2020-10-14 01:04:19,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:04:19,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:19,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:04:19,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:04:19,183 INFO L87 Difference]: Start difference. First operand 16974 states and 22134 transitions. Second operand 5 states. [2020-10-14 01:04:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:28,256 INFO L93 Difference]: Finished difference Result 39839 states and 53053 transitions. [2020-10-14 01:04:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:04:28,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 952 [2020-10-14 01:04:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:28,330 INFO L225 Difference]: With dead ends: 39839 [2020-10-14 01:04:28,330 INFO L226 Difference]: Without dead ends: 22875 [2020-10-14 01:04:28,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:04:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22875 states. [2020-10-14 01:04:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22875 to 22762. [2020-10-14 01:04:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22762 states. [2020-10-14 01:04:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22762 states to 22762 states and 28099 transitions. [2020-10-14 01:04:28,796 INFO L78 Accepts]: Start accepts. Automaton has 22762 states and 28099 transitions. Word has length 952 [2020-10-14 01:04:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:28,798 INFO L479 AbstractCegarLoop]: Abstraction has 22762 states and 28099 transitions. [2020-10-14 01:04:28,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:04:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22762 states and 28099 transitions. [2020-10-14 01:04:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-14 01:04:28,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:28,863 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:04:28,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:04:28,864 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:28,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1190433936, now seen corresponding path program 1 times [2020-10-14 01:04:28,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:28,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453112084] [2020-10-14 01:04:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-14 01:04:34,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:04:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-14 01:04:34,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 01:04:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:04:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:34,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:04:34,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:04:34,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:04:34,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:04:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:04:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:04:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 01:04:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 01:04:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 01:04:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 01:04:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 01:04:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 359 proven. 77 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 01:04:35,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453112084] [2020-10-14 01:04:35,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:35,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:04:35,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663026093] [2020-10-14 01:04:35,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:04:35,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:04:35,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:35,185 INFO L87 Difference]: Start difference. First operand 22762 states and 28099 transitions. Second operand 7 states. [2020-10-14 01:04:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:47,302 INFO L93 Difference]: Finished difference Result 56045 states and 71395 transitions. [2020-10-14 01:04:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:04:47,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1083 [2020-10-14 01:04:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:47,388 INFO L225 Difference]: With dead ends: 56045 [2020-10-14 01:04:47,389 INFO L226 Difference]: Without dead ends: 33289 [2020-10-14 01:04:47,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:04:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33289 states. [2020-10-14 01:04:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33289 to 33215. [2020-10-14 01:04:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33215 states. [2020-10-14 01:04:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33215 states to 33215 states and 39715 transitions. [2020-10-14 01:04:48,000 INFO L78 Accepts]: Start accepts. Automaton has 33215 states and 39715 transitions. Word has length 1083 [2020-10-14 01:04:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:48,000 INFO L479 AbstractCegarLoop]: Abstraction has 33215 states and 39715 transitions. [2020-10-14 01:04:48,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33215 states and 39715 transitions. [2020-10-14 01:04:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-10-14 01:04:48,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:48,053 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:04:48,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:04:48,054 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1077811245, now seen corresponding path program 1 times [2020-10-14 01:04:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:48,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539638328] [2020-10-14 01:04:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:48,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1212 [2020-10-14 01:04:53,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:04:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 01:04:53,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:04:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:53,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:04:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 01:04:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-14 01:04:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:04:53,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-14 01:04:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 01:04:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 01:04:55,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539638328] [2020-10-14 01:04:55,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:55,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:04:55,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904268712] [2020-10-14 01:04:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:04:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:04:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:55,061 INFO L87 Difference]: Start difference. First operand 33215 states and 39715 transitions. Second operand 7 states. [2020-10-14 01:05:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:11,311 INFO L93 Difference]: Finished difference Result 84169 states and 103026 transitions. [2020-10-14 01:05:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:05:11,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1190 [2020-10-14 01:05:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:11,485 INFO L225 Difference]: With dead ends: 84169 [2020-10-14 01:05:11,485 INFO L226 Difference]: Without dead ends: 50960 [2020-10-14 01:05:11,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50960 states. [2020-10-14 01:05:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50960 to 50472. [2020-10-14 01:05:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50472 states. [2020-10-14 01:05:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50472 states to 50472 states and 58906 transitions. [2020-10-14 01:05:12,322 INFO L78 Accepts]: Start accepts. Automaton has 50472 states and 58906 transitions. Word has length 1190 [2020-10-14 01:05:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:12,322 INFO L479 AbstractCegarLoop]: Abstraction has 50472 states and 58906 transitions. [2020-10-14 01:05:12,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 50472 states and 58906 transitions. [2020-10-14 01:05:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1222 [2020-10-14 01:05:12,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:12,399 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:05:12,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:05:12,400 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:12,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1595097901, now seen corresponding path program 1 times [2020-10-14 01:05:12,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:12,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272369559] [2020-10-14 01:05:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:15,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1243 [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:05:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 01:05:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:05:17,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 01:05:17,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 01:05:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-14 01:05:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:18,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:18,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 01:05:18,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-14 01:05:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 01:05:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:05:18,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 01:05:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 425 proven. 230 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 01:05:18,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272369559] [2020-10-14 01:05:18,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:18,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:05:18,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824303385] [2020-10-14 01:05:18,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:18,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:18,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:18,916 INFO L87 Difference]: Start difference. First operand 50472 states and 58906 transitions. Second operand 7 states. [2020-10-14 01:05:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:29,927 INFO L93 Difference]: Finished difference Result 129825 states and 155331 transitions. [2020-10-14 01:05:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:05:29,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1221 [2020-10-14 01:05:29,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:30,126 INFO L225 Difference]: With dead ends: 129825 [2020-10-14 01:05:30,126 INFO L226 Difference]: Without dead ends: 76866 [2020-10-14 01:05:30,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76866 states. [2020-10-14 01:05:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76866 to 71535. [2020-10-14 01:05:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71535 states. [2020-10-14 01:05:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71535 states to 71535 states and 81877 transitions. [2020-10-14 01:05:31,284 INFO L78 Accepts]: Start accepts. Automaton has 71535 states and 81877 transitions. Word has length 1221 [2020-10-14 01:05:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:31,285 INFO L479 AbstractCegarLoop]: Abstraction has 71535 states and 81877 transitions. [2020-10-14 01:05:31,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 71535 states and 81877 transitions. [2020-10-14 01:05:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2020-10-14 01:05:31,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:31,342 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:05:31,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:05:31,342 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash -754463908, now seen corresponding path program 1 times [2020-10-14 01:05:31,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:31,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950209398] [2020-10-14 01:05:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:36,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1425 [2020-10-14 01:05:36,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:05:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-14 01:05:36,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:36,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:05:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:05:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 453 [2020-10-14 01:05:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:05:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:36,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:37,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:05:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:05:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:05:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 454 [2020-10-14 01:05:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:05:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 01:05:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 01:05:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 726 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:05:39,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950209398] [2020-10-14 01:05:39,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:39,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:05:39,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443163943] [2020-10-14 01:05:39,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:05:39,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:39,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:05:39,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:05:39,712 INFO L87 Difference]: Start difference. First operand 71535 states and 81877 transitions. Second operand 8 states.