/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/Problem12_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:51:21,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:51:21,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:51:21,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:51:21,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:51:22,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:51:22,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:51:22,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:51:22,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:51:22,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:51:22,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:51:22,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:51:22,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:51:22,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:51:22,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:51:22,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:51:22,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:51:22,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:51:22,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:51:22,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:51:22,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:51:22,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:51:22,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:51:22,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:51:22,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:51:22,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:51:22,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:51:22,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:51:22,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:51:22,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:51:22,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:51:22,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:51:22,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:51:22,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:51:22,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:51:22,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:51:22,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:51:22,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:51:22,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:51:22,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:51:22,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:51:22,067 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 02:51:22,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:51:22,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:51:22,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:51:22,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:51:22,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:51:22,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:51:22,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:51:22,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:51:22,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:51:22,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:51:22,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:51:22,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:51:22,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:51:22,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:51:22,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:51:22,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:51:22,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:51:22,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:51:22,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:51:22,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:51:22,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:51:22,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:51:22,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:51:22,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:51:22,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:51:22,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:51:22,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:51:22,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:51:22,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:51:22,106 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 02:51:22,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:51:22,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:51:22,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:51:22,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:51:22,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:51:22,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39.c [2020-10-14 02:51:22,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6ac055a/e7a7bf2493aa4f3eb20b5b18b6b15b35/FLAG1a154b054 [2020-10-14 02:51:23,262 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:51:23,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label39.c [2020-10-14 02:51:23,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6ac055a/e7a7bf2493aa4f3eb20b5b18b6b15b35/FLAG1a154b054 [2020-10-14 02:51:23,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6ac055a/e7a7bf2493aa4f3eb20b5b18b6b15b35 [2020-10-14 02:51:23,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:51:23,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:51:23,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:51:23,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:51:23,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:51:23,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:51:23" (1/1) ... [2020-10-14 02:51:23,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54001c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:23, skipping insertion in model container [2020-10-14 02:51:23,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:51:23" (1/1) ... [2020-10-14 02:51:23,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:51:23,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:51:25,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:51:25,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:51:25,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:51:25,962 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:51:25,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25 WrapperNode [2020-10-14 02:51:25,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:51:25,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:51:25,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:51:25,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:51:25,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:25,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (1/1) ... [2020-10-14 02:51:26,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:51:26,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:51:26,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:51:26,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:51:26,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (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 02:51:26,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:51:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:51:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:51:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:51:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:51:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:51:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:51:30,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:51:30,871 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:51:30,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:51:30 BoogieIcfgContainer [2020-10-14 02:51:30,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:51:30,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:51:30,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:51:30,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:51:30,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:51:23" (1/3) ... [2020-10-14 02:51:30,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eb6821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:51:30, skipping insertion in model container [2020-10-14 02:51:30,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:25" (2/3) ... [2020-10-14 02:51:30,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eb6821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:51:30, skipping insertion in model container [2020-10-14 02:51:30,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:51:30" (3/3) ... [2020-10-14 02:51:30,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label39.c [2020-10-14 02:51:30,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:51:30,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:51:30,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:51:30,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:51:30,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:51:30,965 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:51:30,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:51:30,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:51:30,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:51:30,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:51:30,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:51:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:51:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 02:51:31,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:31,019 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] [2020-10-14 02:51:31,020 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:31,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:31,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1239669250, now seen corresponding path program 1 times [2020-10-14 02:51:31,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:31,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709231472] [2020-10-14 02:51:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 02:51:31,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 02:51:31,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:51:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:51:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:51:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:51:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:31,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:51:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:51:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:31,770 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 02:51:31,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709231472] [2020-10-14 02:51:31,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:51:31,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:51:31,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008744531] [2020-10-14 02:51:31,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:51:31,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:31,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:51:31,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:51:31,797 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:51:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:39,991 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 02:51:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:51:39,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 02:51:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:40,050 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 02:51:40,050 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:51:40,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:51:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:51:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 02:51:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 02:51:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 02:51:40,225 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 27 [2020-10-14 02:51:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:40,227 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 02:51:40,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:51:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 02:51:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 02:51:40,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:40,237 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:51:40,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:51:40,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash 784342851, now seen corresponding path program 1 times [2020-10-14 02:51:40,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:40,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492145644] [2020-10-14 02:51:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:41,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 02:51:41,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:51:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-14 02:51:41,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:41,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:51:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:51:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:51:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:41,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:41,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:41,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:51:41,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:51:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:41,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:51:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:51:41,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492145644] [2020-10-14 02:51:41,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:41,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:51:41,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809686993] [2020-10-14 02:51:41,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:51:41,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:41,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:51:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:51:41,780 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 5 states. [2020-10-14 02:51:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:50,802 INFO L93 Difference]: Finished difference Result 4695 states and 7516 transitions. [2020-10-14 02:51:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:51:50,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 02:51:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:50,819 INFO L225 Difference]: With dead ends: 4695 [2020-10-14 02:51:50,820 INFO L226 Difference]: Without dead ends: 3137 [2020-10-14 02:51:50,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:51:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2020-10-14 02:51:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 3131. [2020-10-14 02:51:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3131 states. [2020-10-14 02:51:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4740 transitions. [2020-10-14 02:51:50,910 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4740 transitions. Word has length 106 [2020-10-14 02:51:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:50,911 INFO L479 AbstractCegarLoop]: Abstraction has 3131 states and 4740 transitions. [2020-10-14 02:51:50,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:51:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4740 transitions. [2020-10-14 02:51:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 02:51:50,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:50,914 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:51:50,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:51:50,914 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash -275387181, now seen corresponding path program 1 times [2020-10-14 02:51:50,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:50,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988284697] [2020-10-14 02:51:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:51:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:51:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-14 02:51:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:51:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:51:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:51:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:51,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:51,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:51:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:51:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:51:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:51:52,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988284697] [2020-10-14 02:51:52,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:52,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:51:52,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556731277] [2020-10-14 02:51:52,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:51:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:51:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:51:52,042 INFO L87 Difference]: Start difference. First operand 3131 states and 4740 transitions. Second operand 5 states. [2020-10-14 02:52:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:01,511 INFO L93 Difference]: Finished difference Result 9376 states and 14380 transitions. [2020-10-14 02:52:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:01,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 02:52:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:01,553 INFO L225 Difference]: With dead ends: 9376 [2020-10-14 02:52:01,554 INFO L226 Difference]: Without dead ends: 6251 [2020-10-14 02:52:01,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2020-10-14 02:52:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6245. [2020-10-14 02:52:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6245 states. [2020-10-14 02:52:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 8519 transitions. [2020-10-14 02:52:01,728 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 8519 transitions. Word has length 114 [2020-10-14 02:52:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:01,731 INFO L479 AbstractCegarLoop]: Abstraction has 6245 states and 8519 transitions. [2020-10-14 02:52:01,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 8519 transitions. [2020-10-14 02:52:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 02:52:01,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:01,742 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:52:01,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:52:01,743 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash -876522194, now seen corresponding path program 1 times [2020-10-14 02:52:01,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:01,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763241361] [2020-10-14 02:52:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 02:52:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 757 [2020-10-14 02:52:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:52:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:52:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:02,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:52:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:52:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:52:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 02:52:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:52:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:02,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763241361] [2020-10-14 02:52:02,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:02,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:52:02,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218792765] [2020-10-14 02:52:02,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:52:02,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:52:02,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:02,884 INFO L87 Difference]: Start difference. First operand 6245 states and 8519 transitions. Second operand 6 states. [2020-10-14 02:52:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:15,463 INFO L93 Difference]: Finished difference Result 15593 states and 22084 transitions. [2020-10-14 02:52:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:52:15,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-14 02:52:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:15,513 INFO L225 Difference]: With dead ends: 15593 [2020-10-14 02:52:15,513 INFO L226 Difference]: Without dead ends: 9354 [2020-10-14 02:52:15,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:52:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2020-10-14 02:52:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 9350. [2020-10-14 02:52:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9350 states. [2020-10-14 02:52:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 12486 transitions. [2020-10-14 02:52:15,739 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 12486 transitions. Word has length 115 [2020-10-14 02:52:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:15,741 INFO L479 AbstractCegarLoop]: Abstraction has 9350 states and 12486 transitions. [2020-10-14 02:52:15,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:52:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 12486 transitions. [2020-10-14 02:52:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 02:52:15,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:15,743 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:52:15,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:52:15,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:15,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1831810279, now seen corresponding path program 1 times [2020-10-14 02:52:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:15,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259669289] [2020-10-14 02:52:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:16,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 02:52:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-14 02:52:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:16,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 02:52:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:52:16,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:52:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:16,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:17,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:52:17,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:52:17,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:17,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:17,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:52:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:52:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:17,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259669289] [2020-10-14 02:52:17,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:17,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:17,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434045662] [2020-10-14 02:52:17,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:17,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:17,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:17,150 INFO L87 Difference]: Start difference. First operand 9350 states and 12486 transitions. Second operand 5 states. [2020-10-14 02:52:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:27,283 INFO L93 Difference]: Finished difference Result 27998 states and 38049 transitions. [2020-10-14 02:52:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:27,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 02:52:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:27,371 INFO L225 Difference]: With dead ends: 27998 [2020-10-14 02:52:27,371 INFO L226 Difference]: Without dead ends: 18654 [2020-10-14 02:52:27,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18654 states. [2020-10-14 02:52:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18654 to 17116. [2020-10-14 02:52:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17116 states. [2020-10-14 02:52:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17116 states to 17116 states and 21185 transitions. [2020-10-14 02:52:27,867 INFO L78 Accepts]: Start accepts. Automaton has 17116 states and 21185 transitions. Word has length 140 [2020-10-14 02:52:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:27,868 INFO L479 AbstractCegarLoop]: Abstraction has 17116 states and 21185 transitions. [2020-10-14 02:52:27,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17116 states and 21185 transitions. [2020-10-14 02:52:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 02:52:27,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:27,875 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:52:27,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:52:27,876 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1914840934, now seen corresponding path program 1 times [2020-10-14 02:52:27,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:27,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282326961] [2020-10-14 02:52:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:29,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 02:52:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-14 02:52:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:29,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:52:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:52:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:29,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:29,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:29,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:29,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:29,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:29,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:29,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:52:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:52:29,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:29,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:52:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:30,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282326961] [2020-10-14 02:52:30,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:30,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:30,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328644775] [2020-10-14 02:52:30,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:30,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:30,040 INFO L87 Difference]: Start difference. First operand 17116 states and 21185 transitions. Second operand 5 states. [2020-10-14 02:52:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:40,473 INFO L93 Difference]: Finished difference Result 43530 states and 55987 transitions. [2020-10-14 02:52:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:40,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-14 02:52:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:40,568 INFO L225 Difference]: With dead ends: 43530 [2020-10-14 02:52:40,569 INFO L226 Difference]: Without dead ends: 26420 [2020-10-14 02:52:40,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26420 states. [2020-10-14 02:52:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26420 to 25645. [2020-10-14 02:52:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25645 states. [2020-10-14 02:52:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25645 states to 25645 states and 31496 transitions. [2020-10-14 02:52:41,233 INFO L78 Accepts]: Start accepts. Automaton has 25645 states and 31496 transitions. Word has length 175 [2020-10-14 02:52:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:41,233 INFO L479 AbstractCegarLoop]: Abstraction has 25645 states and 31496 transitions. [2020-10-14 02:52:41,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 25645 states and 31496 transitions. [2020-10-14 02:52:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 02:52:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:41,242 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:52:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:52:41,242 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1131313174, now seen corresponding path program 1 times [2020-10-14 02:52:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445959220] [2020-10-14 02:52:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:42,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 02:52:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-14 02:52:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:43,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-14 02:52:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:52:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:43,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:43,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:43,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:43,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:43,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:52:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 02:52:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 02:52:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:43,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445959220] [2020-10-14 02:52:43,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:43,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:43,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735109193] [2020-10-14 02:52:43,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:43,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:43,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:43,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:43,879 INFO L87 Difference]: Start difference. First operand 25645 states and 31496 transitions. Second operand 5 states. [2020-10-14 02:52:56,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:56,821 INFO L93 Difference]: Finished difference Result 65243 states and 81582 transitions. [2020-10-14 02:52:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:56,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-14 02:52:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:56,954 INFO L225 Difference]: With dead ends: 65243 [2020-10-14 02:52:56,954 INFO L226 Difference]: Without dead ends: 39604 [2020-10-14 02:52:57,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 02:52:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39604 states. [2020-10-14 02:52:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39604 to 37295. [2020-10-14 02:52:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37295 states. [2020-10-14 02:52:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37295 states to 37295 states and 46386 transitions. [2020-10-14 02:52:57,673 INFO L78 Accepts]: Start accepts. Automaton has 37295 states and 46386 transitions. Word has length 225 [2020-10-14 02:52:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:57,674 INFO L479 AbstractCegarLoop]: Abstraction has 37295 states and 46386 transitions. [2020-10-14 02:52:57,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 37295 states and 46386 transitions. [2020-10-14 02:52:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 02:52:57,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:57,685 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:57,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:52:57,685 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash 559365783, now seen corresponding path program 1 times [2020-10-14 02:52:57,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:57,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408190591] [2020-10-14 02:52:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:01,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:01,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 02:53:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:53:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3819 [2020-10-14 02:53:01,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:01,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:53:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:53:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:01,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:01,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:01,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:01,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:01,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:01,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:53:01,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:01,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:53:01,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:01,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:01,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:01,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:01,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:53:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:53:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:02,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 02:53:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 02:53:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 02:53:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:02,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408190591] [2020-10-14 02:53:02,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:02,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:02,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21397567] [2020-10-14 02:53:02,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:02,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:02,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:02,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:02,330 INFO L87 Difference]: Start difference. First operand 37295 states and 46386 transitions. Second operand 7 states. [2020-10-14 02:53:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:20,903 INFO L93 Difference]: Finished difference Result 86767 states and 109872 transitions. [2020-10-14 02:53:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:53:20,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-14 02:53:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:21,059 INFO L225 Difference]: With dead ends: 86767 [2020-10-14 02:53:21,060 INFO L226 Difference]: Without dead ends: 49478 [2020-10-14 02:53:21,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 02:53:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49478 states. [2020-10-14 02:53:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49478 to 49464. [2020-10-14 02:53:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49464 states. [2020-10-14 02:53:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49464 states to 49464 states and 59801 transitions. [2020-10-14 02:53:22,002 INFO L78 Accepts]: Start accepts. Automaton has 49464 states and 59801 transitions. Word has length 246 [2020-10-14 02:53:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:22,003 INFO L479 AbstractCegarLoop]: Abstraction has 49464 states and 59801 transitions. [2020-10-14 02:53:22,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:53:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 49464 states and 59801 transitions. [2020-10-14 02:53:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 02:53:22,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:22,020 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:22,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:53:22,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1672085629, now seen corresponding path program 1 times [2020-10-14 02:53:22,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:22,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632463138] [2020-10-14 02:53:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:27,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:27,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 02:53:27,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:53:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 02:53:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:27,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:27,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:27,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:53:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:53:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:53:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:53:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:27,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 02:53:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 02:53:27,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:27,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 02:53:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:27,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632463138] [2020-10-14 02:53:27,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:27,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:27,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826663352] [2020-10-14 02:53:27,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:27,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:27,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:27,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:27,798 INFO L87 Difference]: Start difference. First operand 49464 states and 59801 transitions. Second operand 7 states. [2020-10-14 02:53:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:50,373 INFO L93 Difference]: Finished difference Result 128674 states and 167099 transitions. [2020-10-14 02:53:50,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:53:50,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 02:53:50,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:50,606 INFO L225 Difference]: With dead ends: 128674 [2020-10-14 02:53:50,606 INFO L226 Difference]: Without dead ends: 79220 [2020-10-14 02:53:50,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:53:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79220 states. [2020-10-14 02:53:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79220 to 78239. [2020-10-14 02:53:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78239 states. [2020-10-14 02:53:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78239 states to 78239 states and 95964 transitions. [2020-10-14 02:53:52,151 INFO L78 Accepts]: Start accepts. Automaton has 78239 states and 95964 transitions. Word has length 284 [2020-10-14 02:53:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:52,151 INFO L479 AbstractCegarLoop]: Abstraction has 78239 states and 95964 transitions. [2020-10-14 02:53:52,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:53:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 78239 states and 95964 transitions. [2020-10-14 02:53:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 02:53:52,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:52,175 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:53:52,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:53:52,176 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:52,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:52,176 INFO L82 PathProgramCache]: Analyzing trace with hash -273305951, now seen corresponding path program 1 times [2020-10-14 02:53:52,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:52,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35053712] [2020-10-14 02:53:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:55,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 02:53:55,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:53:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:55,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:55,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:55,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:55,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 02:53:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 02:53:56,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:56,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 290 [2020-10-14 02:53:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:53:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 02:53:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 02:53:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:56,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:53:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:56,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35053712] [2020-10-14 02:53:56,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:56,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:56,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012456453] [2020-10-14 02:53:56,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:56,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:56,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:56,401 INFO L87 Difference]: Start difference. First operand 78239 states and 95964 transitions. Second operand 5 states. [2020-10-14 02:54:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:13,227 INFO L93 Difference]: Finished difference Result 189256 states and 237202 transitions. [2020-10-14 02:54:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:13,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-14 02:54:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:13,577 INFO L225 Difference]: With dead ends: 189256 [2020-10-14 02:54:13,577 INFO L226 Difference]: Without dead ends: 111027 [2020-10-14 02:54:13,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 02:54:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111027 states. [2020-10-14 02:54:15,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111027 to 104842. [2020-10-14 02:54:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104842 states. [2020-10-14 02:54:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104842 states to 104842 states and 127854 transitions. [2020-10-14 02:54:15,358 INFO L78 Accepts]: Start accepts. Automaton has 104842 states and 127854 transitions. Word has length 323 [2020-10-14 02:54:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:15,359 INFO L479 AbstractCegarLoop]: Abstraction has 104842 states and 127854 transitions. [2020-10-14 02:54:15,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 104842 states and 127854 transitions. [2020-10-14 02:54:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-14 02:54:15,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:15,426 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:15,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:54:15,427 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:15,427 INFO L82 PathProgramCache]: Analyzing trace with hash 137310142, now seen corresponding path program 1 times [2020-10-14 02:54:15,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:15,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560964131] [2020-10-14 02:54:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-10-14 02:54:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:54:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:20,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:54:20,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:54:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:54:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:54:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 340 [2020-10-14 02:54:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:54:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 02:54:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:54:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:21,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 02:54:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 02:54:21,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560964131] [2020-10-14 02:54:21,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:21,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:21,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835014757] [2020-10-14 02:54:21,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:21,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:21,665 INFO L87 Difference]: Start difference. First operand 104842 states and 127854 transitions. Second operand 5 states. [2020-10-14 02:54:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:39,335 INFO L93 Difference]: Finished difference Result 244651 states and 304408 transitions. [2020-10-14 02:54:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:39,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 452 [2020-10-14 02:54:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:39,677 INFO L225 Difference]: With dead ends: 244651 [2020-10-14 02:54:39,677 INFO L226 Difference]: Without dead ends: 139819 [2020-10-14 02:54:39,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 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 02:54:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139819 states. [2020-10-14 02:54:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139819 to 126626. [2020-10-14 02:54:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126626 states. [2020-10-14 02:54:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126626 states to 126626 states and 153067 transitions. [2020-10-14 02:54:41,505 INFO L78 Accepts]: Start accepts. Automaton has 126626 states and 153067 transitions. Word has length 452 [2020-10-14 02:54:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:41,506 INFO L479 AbstractCegarLoop]: Abstraction has 126626 states and 153067 transitions. [2020-10-14 02:54:41,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 126626 states and 153067 transitions. [2020-10-14 02:54:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-14 02:54:41,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:41,607 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:41,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:54:41,608 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:41,609 INFO L82 PathProgramCache]: Analyzing trace with hash 839415333, now seen corresponding path program 1 times [2020-10-14 02:54:41,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:41,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106746467] [2020-10-14 02:54:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:42,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:45,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:45,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-14 02:54:45,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:54:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3553 [2020-10-14 02:54:45,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:45,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:45,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:54:45,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 02:54:45,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 423 [2020-10-14 02:54:45,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:45,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:45,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:54:45,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:45,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:45,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 02:54:45,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 02:54:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 02:54:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:48,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3033 [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:54:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 424 [2020-10-14 02:54:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:54:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:49,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:49,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 02:54:49,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:50,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106746467] [2020-10-14 02:54:50,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:50,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 02:54:50,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719171537] [2020-10-14 02:54:50,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 02:54:50,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:50,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 02:54:50,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 02:54:50,080 INFO L87 Difference]: Start difference. First operand 126626 states and 153067 transitions. Second operand 9 states.