/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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:06:07,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:06:07,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:06:07,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:06:07,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:06:07,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:06:07,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:06:07,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:06:07,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:06:07,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:06:07,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:06:07,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:06:07,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:06:07,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:06:07,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:06:07,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:06:07,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:06:07,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:06:07,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:06:07,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:06:07,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:06:07,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:06:07,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:06:07,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:06:07,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:06:07,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:06:07,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:06:08,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:06:08,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:06:08,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:06:08,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:06:08,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:06:08,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:06:08,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:06:08,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:06:08,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:06:08,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:06:08,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:06:08,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:06:08,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:06:08,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:06:08,016 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 01:06:08,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:06:08,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:06:08,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:06:08,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:06:08,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:06:08,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:06:08,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:06:08,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:06:08,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:06:08,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:06:08,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:06:08,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:06:08,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:06:08,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:06:08,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:06:08,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:06:08,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:06:08,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:06:08,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:06:08,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:06:08,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:06:08,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:06:08,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:06:08,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:06:08,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:06:08,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:06:08,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:06:08,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:06:08,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:06:08,066 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 01:06:08,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:06:08,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:06:08,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:06:08,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:06:08,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:06:08,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label36.c [2020-10-14 01:06:08,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29768b2b7/a115c2467e534fc5803d0959b1e72dfd/FLAG818f58bc9 [2020-10-14 01:06:09,157 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:06:09,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label36.c [2020-10-14 01:06:09,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29768b2b7/a115c2467e534fc5803d0959b1e72dfd/FLAG818f58bc9 [2020-10-14 01:06:09,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29768b2b7/a115c2467e534fc5803d0959b1e72dfd [2020-10-14 01:06:09,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:06:09,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:06:09,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:06:09,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:06:09,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:06:09,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:06:09" (1/1) ... [2020-10-14 01:06:09,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780fc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:09, skipping insertion in model container [2020-10-14 01:06:09,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:06:09" (1/1) ... [2020-10-14 01:06:09,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:06:09,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:06:11,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:06:11,152 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:06:11,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:06:11,848 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:06:11,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11 WrapperNode [2020-10-14 01:06:11,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:06:11,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:06:11,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:06:11,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:06:11,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:11,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:11,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:11,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:12,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:12,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:12,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (1/1) ... [2020-10-14 01:06:12,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:06:12,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:06:12,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:06:12,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:06:12,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (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 01:06:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:06:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:06:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:06:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:06:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:06:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:06:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:06:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:06:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:06:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:06:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:06:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:06:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:06:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:06:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:06:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:06:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:06:16,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:06:16,737 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:06:16,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:06:16 BoogieIcfgContainer [2020-10-14 01:06:16,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:06:16,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:06:16,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:06:16,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:06:16,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:06:09" (1/3) ... [2020-10-14 01:06:16,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e28a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:06:16, skipping insertion in model container [2020-10-14 01:06:16,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:11" (2/3) ... [2020-10-14 01:06:16,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e28a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:06:16, skipping insertion in model container [2020-10-14 01:06:16,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:06:16" (3/3) ... [2020-10-14 01:06:16,764 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label36.c [2020-10-14 01:06:16,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:06:16,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:06:16,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:06:16,827 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:06:16,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:06:16,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:06:16,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:06:16,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:06:16,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:06:16,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:06:16,828 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:06:16,863 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:06:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-14 01:06:16,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:06:16,916 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] [2020-10-14 01:06:16,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:06:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:06:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash -435010422, now seen corresponding path program 1 times [2020-10-14 01:06:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:06:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878953152] [2020-10-14 01:06:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:06:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:22,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:22,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-14 01:06:22,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:06:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-14 01:06:22,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:22,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:06:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:06:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 795 [2020-10-14 01:06:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:06:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:06:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:23,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:06:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:23,820 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 01:06:23,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878953152] [2020-10-14 01:06:23,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:06:23,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:06:23,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949185011] [2020-10-14 01:06:23,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:06:23,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:06:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:06:23,845 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 01:06:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:06:32,326 INFO L93 Difference]: Finished difference Result 2672 states and 5134 transitions. [2020-10-14 01:06:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:06:32,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 787 [2020-10-14 01:06:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:06:32,383 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:06:32,383 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:06:32,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:06:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:06:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1698. [2020-10-14 01:06:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 01:06:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2780 transitions. [2020-10-14 01:06:32,582 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2780 transitions. Word has length 787 [2020-10-14 01:06:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:06:32,585 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2780 transitions. [2020-10-14 01:06:32,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:06:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2780 transitions. [2020-10-14 01:06:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-14 01:06:32,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:06:32,614 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:06:32,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:06:32,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:06:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:06:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1998527433, now seen corresponding path program 1 times [2020-10-14 01:06:32,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:06:32,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900716287] [2020-10-14 01:06:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:06:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-14 01:06:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:06:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-14 01:06:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:37,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:06:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:06:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:06:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:38,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:38,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:06:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:38,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:06:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:06:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:38,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:38,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:06:38,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:06:38,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:38,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:06:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:06:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:06:38,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900716287] [2020-10-14 01:06:38,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:06:38,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:06:38,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190870010] [2020-10-14 01:06:38,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:06:38,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:38,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:06:38,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:06:38,838 INFO L87 Difference]: Start difference. First operand 1698 states and 2780 transitions. Second operand 7 states. [2020-10-14 01:06:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:06:49,170 INFO L93 Difference]: Finished difference Result 5140 states and 8465 transitions. [2020-10-14 01:06:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:06:49,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 798 [2020-10-14 01:06:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:06:49,190 INFO L225 Difference]: With dead ends: 5140 [2020-10-14 01:06:49,190 INFO L226 Difference]: Without dead ends: 3448 [2020-10-14 01:06:49,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:06:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2020-10-14 01:06:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3436. [2020-10-14 01:06:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3436 states. [2020-10-14 01:06:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 5341 transitions. [2020-10-14 01:06:49,317 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 5341 transitions. Word has length 798 [2020-10-14 01:06:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:06:49,318 INFO L479 AbstractCegarLoop]: Abstraction has 3436 states and 5341 transitions. [2020-10-14 01:06:49,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:06:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 5341 transitions. [2020-10-14 01:06:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-14 01:06:49,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:06:49,339 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:06:49,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:06:49,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:06:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:06:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 456140557, now seen corresponding path program 1 times [2020-10-14 01:06:49,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:06:49,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077885078] [2020-10-14 01:06:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:06:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:54,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-14 01:06:54,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:06:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-14 01:06:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:54,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:06:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:06:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:06:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:54,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:06:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:54,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:06:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:06:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:54,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:54,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:06:54,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:06:54,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:54,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:06:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:06:54,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:06:55,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077885078] [2020-10-14 01:06:55,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:06:55,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:06:55,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196419690] [2020-10-14 01:06:55,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:06:55,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:55,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:06:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:06:55,264 INFO L87 Difference]: Start difference. First operand 3436 states and 5341 transitions. Second operand 7 states. [2020-10-14 01:07:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:06,398 INFO L93 Difference]: Finished difference Result 10568 states and 16794 transitions. [2020-10-14 01:07:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:07:06,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-14 01:07:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:06,435 INFO L225 Difference]: With dead ends: 10568 [2020-10-14 01:07:06,435 INFO L226 Difference]: Without dead ends: 7138 [2020-10-14 01:07:06,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 01:07:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2020-10-14 01:07:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 6976. [2020-10-14 01:07:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6976 states. [2020-10-14 01:07:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 9849 transitions. [2020-10-14 01:07:06,640 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 9849 transitions. Word has length 800 [2020-10-14 01:07:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:06,643 INFO L479 AbstractCegarLoop]: Abstraction has 6976 states and 9849 transitions. [2020-10-14 01:07:06,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:07:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 9849 transitions. [2020-10-14 01:07:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-14 01:07:06,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:06,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:07:06,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:07:06,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1318653436, now seen corresponding path program 1 times [2020-10-14 01:07:06,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:06,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274961228] [2020-10-14 01:07:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:11,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-14 01:07:11,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:07:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 01:07:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:11,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:07:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 01:07:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:11,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:07:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:11,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:07:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:07:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:12,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:12,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:07:12,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:07:12,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:12,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:07:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:07:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:07:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 01:07:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 01:07:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:07:12,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274961228] [2020-10-14 01:07:12,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:07:12,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:07:12,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115310753] [2020-10-14 01:07:12,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:07:12,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:12,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:07:12,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:07:12,570 INFO L87 Difference]: Start difference. First operand 6976 states and 9849 transitions. Second operand 7 states. [2020-10-14 01:07:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:23,568 INFO L93 Difference]: Finished difference Result 21081 states and 30915 transitions. [2020-10-14 01:07:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:07:23,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 875 [2020-10-14 01:07:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:23,631 INFO L225 Difference]: With dead ends: 21081 [2020-10-14 01:07:23,631 INFO L226 Difference]: Without dead ends: 14111 [2020-10-14 01:07:23,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 01:07:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states. [2020-10-14 01:07:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14111 to 14019. [2020-10-14 01:07:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14019 states. [2020-10-14 01:07:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14019 states to 14019 states and 18633 transitions. [2020-10-14 01:07:23,965 INFO L78 Accepts]: Start accepts. Automaton has 14019 states and 18633 transitions. Word has length 875 [2020-10-14 01:07:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:23,966 INFO L479 AbstractCegarLoop]: Abstraction has 14019 states and 18633 transitions. [2020-10-14 01:07:23,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:07:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14019 states and 18633 transitions. [2020-10-14 01:07:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-10-14 01:07:24,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:24,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:07:24,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:07:24,023 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -165764490, now seen corresponding path program 1 times [2020-10-14 01:07:24,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:24,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847074828] [2020-10-14 01:07:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 902 [2020-10-14 01:07:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:07:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 01:07:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:29,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:07:29,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 01:07:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:29,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:29,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:07:29,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:07:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:07:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 01:07:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:07:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:07:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:07:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:07:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 01:07:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 01:07:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 01:07:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:07:29,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847074828] [2020-10-14 01:07:29,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:07:29,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:07:29,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950162078] [2020-10-14 01:07:29,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:07:29,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:29,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:07:29,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:07:29,968 INFO L87 Difference]: Start difference. First operand 14019 states and 18633 transitions. Second operand 7 states. [2020-10-14 01:07:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:41,650 INFO L93 Difference]: Finished difference Result 35154 states and 49222 transitions. [2020-10-14 01:07:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:07:41,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 884 [2020-10-14 01:07:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:41,728 INFO L225 Difference]: With dead ends: 35154 [2020-10-14 01:07:41,729 INFO L226 Difference]: Without dead ends: 21141 [2020-10-14 01:07:41,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:07:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21141 states. [2020-10-14 01:07:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21141 to 21052. [2020-10-14 01:07:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21052 states. [2020-10-14 01:07:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21052 states to 21052 states and 27684 transitions. [2020-10-14 01:07:43,138 INFO L78 Accepts]: Start accepts. Automaton has 21052 states and 27684 transitions. Word has length 884 [2020-10-14 01:07:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:43,139 INFO L479 AbstractCegarLoop]: Abstraction has 21052 states and 27684 transitions. [2020-10-14 01:07:43,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:07:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 21052 states and 27684 transitions. [2020-10-14 01:07:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-14 01:07:43,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:43,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:07:43,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:07:43,209 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:43,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1239897582, now seen corresponding path program 1 times [2020-10-14 01:07:43,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:43,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639174681] [2020-10-14 01:07:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:48,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:48,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-14 01:07:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:07:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 01:07:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:07:48,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:48,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:07:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:07:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:07:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:07:48,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:48,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:07:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:07:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:48,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:07:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 01:07:48,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:48,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 01:07:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:07:49,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639174681] [2020-10-14 01:07:49,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:07:49,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:07:49,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467452493] [2020-10-14 01:07:49,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:07:49,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:07:49,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:07:49,270 INFO L87 Difference]: Start difference. First operand 21052 states and 27684 transitions. Second operand 7 states. [2020-10-14 01:08:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:01,176 INFO L93 Difference]: Finished difference Result 62526 states and 84793 transitions. [2020-10-14 01:08:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:08:01,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 944 [2020-10-14 01:08:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:01,306 INFO L225 Difference]: With dead ends: 62526 [2020-10-14 01:08:01,307 INFO L226 Difference]: Without dead ends: 41480 [2020-10-14 01:08:01,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 01:08:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41480 states. [2020-10-14 01:08:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41480 to 38030. [2020-10-14 01:08:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38030 states. [2020-10-14 01:08:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38030 states to 38030 states and 47826 transitions. [2020-10-14 01:08:02,058 INFO L78 Accepts]: Start accepts. Automaton has 38030 states and 47826 transitions. Word has length 944 [2020-10-14 01:08:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:02,059 INFO L479 AbstractCegarLoop]: Abstraction has 38030 states and 47826 transitions. [2020-10-14 01:08:02,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 38030 states and 47826 transitions. [2020-10-14 01:08:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-14 01:08:02,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:02,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:08:02,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:08:02,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -812525746, now seen corresponding path program 1 times [2020-10-14 01:08:02,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:02,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516068849] [2020-10-14 01:08:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:07,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-14 01:08:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 01:08:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:08:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:08:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:08:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:07,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 01:08:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:08:08,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516068849] [2020-10-14 01:08:08,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:08,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:08:08,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738603087] [2020-10-14 01:08:08,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:08:08,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:08,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:08:08,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:08:08,260 INFO L87 Difference]: Start difference. First operand 38030 states and 47826 transitions. Second operand 7 states. [2020-10-14 01:08:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:20,069 INFO L93 Difference]: Finished difference Result 95487 states and 122843 transitions. [2020-10-14 01:08:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:08:20,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 999 [2020-10-14 01:08:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:20,201 INFO L225 Difference]: With dead ends: 95487 [2020-10-14 01:08:20,201 INFO L226 Difference]: Without dead ends: 54935 [2020-10-14 01:08:20,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 01:08:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54935 states. [2020-10-14 01:08:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54935 to 49838. [2020-10-14 01:08:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49838 states. [2020-10-14 01:08:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49838 states to 49838 states and 61097 transitions. [2020-10-14 01:08:21,039 INFO L78 Accepts]: Start accepts. Automaton has 49838 states and 61097 transitions. Word has length 999 [2020-10-14 01:08:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:21,040 INFO L479 AbstractCegarLoop]: Abstraction has 49838 states and 61097 transitions. [2020-10-14 01:08:21,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49838 states and 61097 transitions. [2020-10-14 01:08:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-14 01:08:21,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:21,084 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:21,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:08:21,085 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:21,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1415455045, now seen corresponding path program 1 times [2020-10-14 01:08:21,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:21,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748696148] [2020-10-14 01:08:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:26,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1148 [2020-10-14 01:08:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:08:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-14 01:08:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:26,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:08:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:08:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-14 01:08:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:26,908 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-14 01:08:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:08:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:08:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:08:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:27,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:27,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 01:08:27,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-14 01:08:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:08:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:27,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:08:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:08:27,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:27,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 01:08:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:08:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:08:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 01:08:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:27,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:08:27,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 01:08:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:27,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 01:08:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-14 01:08:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:27,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:08:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:08:27,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:27,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:08:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 327 proven. 95 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 01:08:28,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748696148] [2020-10-14 01:08:28,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:28,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:08:28,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365888862] [2020-10-14 01:08:28,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:08:28,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:28,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:08:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:08:28,820 INFO L87 Difference]: Start difference. First operand 49838 states and 61097 transitions. Second operand 7 states. [2020-10-14 01:08:39,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:39,421 INFO L93 Difference]: Finished difference Result 116732 states and 144401 transitions. [2020-10-14 01:08:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:08:39,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1126 [2020-10-14 01:08:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:39,602 INFO L225 Difference]: With dead ends: 116732 [2020-10-14 01:08:39,602 INFO L226 Difference]: Without dead ends: 66900 [2020-10-14 01:08:39,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:08:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66900 states. [2020-10-14 01:08:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66900 to 65177. [2020-10-14 01:08:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65177 states. [2020-10-14 01:08:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65177 states to 65177 states and 78848 transitions. [2020-10-14 01:08:42,233 INFO L78 Accepts]: Start accepts. Automaton has 65177 states and 78848 transitions. Word has length 1126 [2020-10-14 01:08:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:42,234 INFO L479 AbstractCegarLoop]: Abstraction has 65177 states and 78848 transitions. [2020-10-14 01:08:42,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 65177 states and 78848 transitions. [2020-10-14 01:08:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-14 01:08:42,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:42,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:08:42,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:08:42,288 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:42,289 INFO L82 PathProgramCache]: Analyzing trace with hash -41633496, now seen corresponding path program 1 times [2020-10-14 01:08:42,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:42,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149487752] [2020-10-14 01:08:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:47,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:47,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1160 [2020-10-14 01:08:47,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-14 01:08:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:47,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:08:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:08:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:48,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:48,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 01:08:48,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-14 01:08:48,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:48,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:08:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-14 01:08:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:08:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:48,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:48,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 01:08:48,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:48,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 01:08:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:08:49,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149487752] [2020-10-14 01:08:49,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:49,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:08:49,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153987196] [2020-10-14 01:08:49,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:08:49,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:08:49,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:08:49,648 INFO L87 Difference]: Start difference. First operand 65177 states and 78848 transitions. Second operand 8 states. [2020-10-14 01:09:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:06,171 INFO L93 Difference]: Finished difference Result 131503 states and 159627 transitions. [2020-10-14 01:09:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 01:09:06,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1140 [2020-10-14 01:09:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:06,279 INFO L225 Difference]: With dead ends: 131503 [2020-10-14 01:09:06,279 INFO L226 Difference]: Without dead ends: 66310 [2020-10-14 01:09:06,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:09:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66310 states. [2020-10-14 01:09:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66310 to 66237. [2020-10-14 01:09:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66237 states. [2020-10-14 01:09:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66237 states to 66237 states and 79395 transitions. [2020-10-14 01:09:07,247 INFO L78 Accepts]: Start accepts. Automaton has 66237 states and 79395 transitions. Word has length 1140 [2020-10-14 01:09:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:07,248 INFO L479 AbstractCegarLoop]: Abstraction has 66237 states and 79395 transitions. [2020-10-14 01:09:07,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:09:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 66237 states and 79395 transitions. [2020-10-14 01:09:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2020-10-14 01:09:07,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:07,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:09:07,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:09:07,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:07,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1395863152, now seen corresponding path program 1 times [2020-10-14 01:09:07,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:07,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494693057] [2020-10-14 01:09:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1176 [2020-10-14 01:09:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:09:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-14 01:09:13,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:09:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 383 [2020-10-14 01:09:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 792 [2020-10-14 01:09:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:13,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:09:13,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:09:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:09:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:09:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 01:09:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:09:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:09:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:09:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-14 01:09:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:09:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:09:13,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-14 01:09:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:13,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:09:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 354 proven. 5 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 01:09:16,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494693057] [2020-10-14 01:09:16,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:16,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:09:16,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731767511] [2020-10-14 01:09:16,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:09:16,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:16,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:09:16,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:09:16,009 INFO L87 Difference]: Start difference. First operand 66237 states and 79395 transitions. Second operand 5 states. [2020-10-14 01:09:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:25,426 INFO L93 Difference]: Finished difference Result 130802 states and 157111 transitions. [2020-10-14 01:09:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:09:25,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1152 [2020-10-14 01:09:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:25,536 INFO L225 Difference]: With dead ends: 130802 [2020-10-14 01:09:25,537 INFO L226 Difference]: Without dead ends: 66250 [2020-10-14 01:09:25,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 01:09:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66250 states. [2020-10-14 01:09:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66250 to 66208. [2020-10-14 01:09:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66208 states. [2020-10-14 01:09:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66208 states to 66208 states and 74551 transitions. [2020-10-14 01:09:26,464 INFO L78 Accepts]: Start accepts. Automaton has 66208 states and 74551 transitions. Word has length 1152 [2020-10-14 01:09:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:26,465 INFO L479 AbstractCegarLoop]: Abstraction has 66208 states and 74551 transitions. [2020-10-14 01:09:26,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:09:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 66208 states and 74551 transitions. [2020-10-14 01:09:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2020-10-14 01:09:26,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:26,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:09:26,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:09:26,511 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -969826109, now seen corresponding path program 1 times [2020-10-14 01:09:26,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:26,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972290034] [2020-10-14 01:09:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1305 [2020-10-14 01:09:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:09:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 01:09:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-14 01:09:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 01:09:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:31,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:31,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:09:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:09:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 01:09:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 01:09:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:32,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 01:09:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-14 01:09:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 01:09:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-10-14 01:09:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:32,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:32,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:09:32,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 663 proven. 126 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-14 01:09:33,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972290034] [2020-10-14 01:09:33,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:33,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:09:33,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983352659] [2020-10-14 01:09:33,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:09:33,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:09:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:09:33,105 INFO L87 Difference]: Start difference. First operand 66208 states and 74551 transitions. Second operand 7 states.