/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/Problem05_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:22:01,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:22:01,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:22:01,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:22:01,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:22:01,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:22:01,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:22:01,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:22:01,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:22:01,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:22:01,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:22:01,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:22:01,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:22:01,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:22:01,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:22:01,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:22:01,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:22:01,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:22:01,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:22:01,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:22:01,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:22:01,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:22:01,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:22:01,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:22:01,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:22:01,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:22:01,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:22:01,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:22:01,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:22:01,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:22:01,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:22:01,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:22:01,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:22:01,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:22:01,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:22:01,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:22:01,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:22:01,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:22:01,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:22:01,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:22:01,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:22:01,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:22:01,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:22:01,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:22:01,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:22:01,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:22:01,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:22:01,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:22:01,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:22:01,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:22:01,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:22:01,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:22:01,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:22:01,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:22:01,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:22:01,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:22:01,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:22:01,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:22:01,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:22:01,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:22:01,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:22:01,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:22:01,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:22:01,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:22:01,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:22:01,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:22:01,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:22:01,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:22:01,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:22:01,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:22:01,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:22:01,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:22:01,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label36.c [2020-10-14 01:22:01,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edfeea207/5fbab55f6e2740d093079d83f623e331/FLAGec2347e1f [2020-10-14 01:22:02,488 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:22:02,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label36.c [2020-10-14 01:22:02,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edfeea207/5fbab55f6e2740d093079d83f623e331/FLAGec2347e1f [2020-10-14 01:22:02,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edfeea207/5fbab55f6e2740d093079d83f623e331 [2020-10-14 01:22:02,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:22:02,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:22:02,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:22:02,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:22:02,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:22:02,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:22:02" (1/1) ... [2020-10-14 01:22:02,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55571c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:02, skipping insertion in model container [2020-10-14 01:22:02,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:22:02" (1/1) ... [2020-10-14 01:22:02,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:22:03,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:22:05,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:22:05,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:22:06,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:22:06,896 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:22:06,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06 WrapperNode [2020-10-14 01:22:06,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:22:06,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:22:06,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:22:06,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:22:06,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:06,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... [2020-10-14 01:22:07,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:22:07,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:22:07,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:22:07,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:22:07,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:22:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:22:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:22:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:22:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:22:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:22:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:22:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:22:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:22:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:22:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:22:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:22:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:22:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:22:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:22:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:22:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:22:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:22:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:22:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:22:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:22:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:22:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:22:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:22:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:22:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:22:16,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:22:16,443 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:22:16,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:22:16 BoogieIcfgContainer [2020-10-14 01:22:16,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:22:16,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:22:16,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:22:16,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:22:16,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:22:02" (1/3) ... [2020-10-14 01:22:16,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b16803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:22:16, skipping insertion in model container [2020-10-14 01:22:16,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:06" (2/3) ... [2020-10-14 01:22:16,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b16803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:22:16, skipping insertion in model container [2020-10-14 01:22:16,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:22:16" (3/3) ... [2020-10-14 01:22:16,470 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label36.c [2020-10-14 01:22:16,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:22:16,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:22:16,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:22:16,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:22:16,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:22:16,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:22:16,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:22:16,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:22:16,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:22:16,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:22:16,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:22:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:22:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2020-10-14 01:22:16,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:22:16,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:22:16,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:22:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:22:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1153284937, now seen corresponding path program 1 times [2020-10-14 01:22:16,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:22:16,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674091475] [2020-10-14 01:22:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:22:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:22,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:22,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1694 [2020-10-14 01:22:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 01:22:22,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:22,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:22:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:22:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1688 [2020-10-14 01:22:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:22:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:22:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:24,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:24,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:22:24,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:22:24,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:24,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:22:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:22:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:22:26,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674091475] [2020-10-14 01:22:26,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:22:26,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:22:26,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954640038] [2020-10-14 01:22:26,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:22:26,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:22:26,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:22:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:22:26,747 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 01:22:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:22:44,071 INFO L93 Difference]: Finished difference Result 6418 states and 12032 transitions. [2020-10-14 01:22:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:22:44,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1672 [2020-10-14 01:22:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:22:44,146 INFO L225 Difference]: With dead ends: 6418 [2020-10-14 01:22:44,146 INFO L226 Difference]: Without dead ends: 4132 [2020-10-14 01:22:44,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:22:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2020-10-14 01:22:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 4045. [2020-10-14 01:22:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4045 states. [2020-10-14 01:22:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6836 transitions. [2020-10-14 01:22:44,366 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6836 transitions. Word has length 1672 [2020-10-14 01:22:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:22:44,370 INFO L479 AbstractCegarLoop]: Abstraction has 4045 states and 6836 transitions. [2020-10-14 01:22:44,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:22:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6836 transitions. [2020-10-14 01:22:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-14 01:22:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:22:44,511 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:22:44,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:22:44,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:22:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:22:44,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2065464955, now seen corresponding path program 1 times [2020-10-14 01:22:44,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:22:44,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917208430] [2020-10-14 01:22:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:22:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:49,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1708 [2020-10-14 01:22:49,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:22:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 01:22:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:49,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:22:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:22:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:22:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:22:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:22:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:22:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:22:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:50,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:22:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:22:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:22:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 01:22:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:22:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:22:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:22:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:50,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:22:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:22:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:22:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:22:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:22:52,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917208430] [2020-10-14 01:22:52,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:22:52,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:22:52,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858290791] [2020-10-14 01:22:52,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:22:52,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:22:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:22:52,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:22:52,560 INFO L87 Difference]: Start difference. First operand 4045 states and 6836 transitions. Second operand 7 states. [2020-10-14 01:23:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:23:15,657 INFO L93 Difference]: Finished difference Result 11836 states and 20222 transitions. [2020-10-14 01:23:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:23:15,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-14 01:23:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:23:15,719 INFO L225 Difference]: With dead ends: 11836 [2020-10-14 01:23:15,720 INFO L226 Difference]: Without dead ends: 7797 [2020-10-14 01:23:15,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:23:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-10-14 01:23:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7691. [2020-10-14 01:23:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7691 states. [2020-10-14 01:23:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7691 states to 7691 states and 11727 transitions. [2020-10-14 01:23:16,014 INFO L78 Accepts]: Start accepts. Automaton has 7691 states and 11727 transitions. Word has length 1684 [2020-10-14 01:23:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:23:16,015 INFO L479 AbstractCegarLoop]: Abstraction has 7691 states and 11727 transitions. [2020-10-14 01:23:16,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:23:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7691 states and 11727 transitions. [2020-10-14 01:23:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-14 01:23:16,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:23:16,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:23:16,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:23:16,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:23:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:23:16,073 INFO L82 PathProgramCache]: Analyzing trace with hash 330934351, now seen corresponding path program 1 times [2020-10-14 01:23:16,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:23:16,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266984652] [2020-10-14 01:23:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:23:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-14 01:23:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 01:23:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:21,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 01:23:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:23:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:22,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 01:23:22,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 01:23:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:22,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 01:23:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:23,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266984652] [2020-10-14 01:23:23,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:23,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:23,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830034620] [2020-10-14 01:23:23,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:23,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:23,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:23,387 INFO L87 Difference]: Start difference. First operand 7691 states and 11727 transitions. Second operand 7 states. [2020-10-14 01:23:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:23:47,307 INFO L93 Difference]: Finished difference Result 22965 states and 35781 transitions. [2020-10-14 01:23:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:23:47,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1704 [2020-10-14 01:23:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:23:47,382 INFO L225 Difference]: With dead ends: 22965 [2020-10-14 01:23:47,382 INFO L226 Difference]: Without dead ends: 15280 [2020-10-14 01:23:47,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:23:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15280 states. [2020-10-14 01:23:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15280 to 15184. [2020-10-14 01:23:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15184 states. [2020-10-14 01:23:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 21512 transitions. [2020-10-14 01:23:47,805 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 21512 transitions. Word has length 1704 [2020-10-14 01:23:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:23:47,806 INFO L479 AbstractCegarLoop]: Abstraction has 15184 states and 21512 transitions. [2020-10-14 01:23:47,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:23:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 21512 transitions. [2020-10-14 01:23:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-14 01:23:47,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:23:47,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:23:47,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:23:47,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:23:47,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:23:47,883 INFO L82 PathProgramCache]: Analyzing trace with hash -613076776, now seen corresponding path program 1 times [2020-10-14 01:23:47,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:23:47,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978609753] [2020-10-14 01:23:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:23:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:53,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1736 [2020-10-14 01:23:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-14 01:23:53,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:53,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 01:23:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:53,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:53,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:53,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:23:53,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:53,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:53,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:23:53,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 01:23:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:23:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:23:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:55,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978609753] [2020-10-14 01:23:55,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:55,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:55,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851549454] [2020-10-14 01:23:55,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:55,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:55,316 INFO L87 Difference]: Start difference. First operand 15184 states and 21512 transitions. Second operand 7 states. [2020-10-14 01:24:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:24:16,848 INFO L93 Difference]: Finished difference Result 46688 states and 73889 transitions. [2020-10-14 01:24:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:24:16,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712 [2020-10-14 01:24:16,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:24:17,031 INFO L225 Difference]: With dead ends: 46688 [2020-10-14 01:24:17,031 INFO L226 Difference]: Without dead ends: 31510 [2020-10-14 01:24:17,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:24:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31510 states. [2020-10-14 01:24:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31510 to 30812. [2020-10-14 01:24:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30812 states. [2020-10-14 01:24:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30812 states to 30812 states and 42124 transitions. [2020-10-14 01:24:18,067 INFO L78 Accepts]: Start accepts. Automaton has 30812 states and 42124 transitions. Word has length 1712 [2020-10-14 01:24:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:24:18,068 INFO L479 AbstractCegarLoop]: Abstraction has 30812 states and 42124 transitions. [2020-10-14 01:24:18,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:24:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 30812 states and 42124 transitions. [2020-10-14 01:24:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2020-10-14 01:24:18,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:24:18,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:24:18,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:24:18,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:24:18,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:24:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash -845294320, now seen corresponding path program 1 times [2020-10-14 01:24:18,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:24:18,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889107814] [2020-10-14 01:24:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:24:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:23,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-14 01:24:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:24:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 01:24:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:24:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:24:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:24:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:24:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:24:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:24,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:24,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:24:24,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:24:24,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:24,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:24:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:24:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:24:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:24:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:24:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:24,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 01:24:24,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 01:24:24,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:24,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:24:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:24:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 01:24:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:24:25,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889107814] [2020-10-14 01:24:25,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:24:25,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:24:25,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621398166] [2020-10-14 01:24:25,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:24:25,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:24:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:24:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:24:25,197 INFO L87 Difference]: Start difference. First operand 30812 states and 42124 transitions. Second operand 7 states. [2020-10-14 01:24:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:24:47,295 INFO L93 Difference]: Finished difference Result 69607 states and 98225 transitions. [2020-10-14 01:24:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:24:47,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1713 [2020-10-14 01:24:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:24:47,428 INFO L225 Difference]: With dead ends: 69607 [2020-10-14 01:24:47,429 INFO L226 Difference]: Without dead ends: 38801 [2020-10-14 01:24:47,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:24:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38801 states. [2020-10-14 01:24:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38801 to 38243. [2020-10-14 01:24:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38243 states. [2020-10-14 01:24:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38243 states to 38243 states and 47512 transitions. [2020-10-14 01:24:48,346 INFO L78 Accepts]: Start accepts. Automaton has 38243 states and 47512 transitions. Word has length 1713 [2020-10-14 01:24:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:24:48,347 INFO L479 AbstractCegarLoop]: Abstraction has 38243 states and 47512 transitions. [2020-10-14 01:24:48,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:24:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 38243 states and 47512 transitions. [2020-10-14 01:24:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2020-10-14 01:24:48,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:24:48,433 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:24:48,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:24:48,434 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:24:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:24:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1627792313, now seen corresponding path program 1 times [2020-10-14 01:24:48,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:24:48,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477100677] [2020-10-14 01:24:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:24:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:53,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:53,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-14 01:24:53,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:24:53,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-14 01:24:53,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:53,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:24:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 01:24:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 01:24:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:24:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:24:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:24:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:54,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:24:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:24:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:24:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:24:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:24:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:24:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:54,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:24:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:24:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:24:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:24:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:54,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:24:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 01:24:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:54,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:24:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:24:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:24:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:24:55,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477100677] [2020-10-14 01:24:55,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:24:55,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:24:55,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046490654] [2020-10-14 01:24:55,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:24:55,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:24:55,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:24:55,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:24:55,941 INFO L87 Difference]: Start difference. First operand 38243 states and 47512 transitions. Second operand 7 states. [2020-10-14 01:25:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:25:25,103 INFO L93 Difference]: Finished difference Result 114499 states and 149102 transitions. [2020-10-14 01:25:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:25:25,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1734 [2020-10-14 01:25:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:25:25,352 INFO L225 Difference]: With dead ends: 114499 [2020-10-14 01:25:25,352 INFO L226 Difference]: Without dead ends: 68580 [2020-10-14 01:25:25,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:25:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68580 states. [2020-10-14 01:25:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68580 to 67954. [2020-10-14 01:25:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67954 states. [2020-10-14 01:25:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67954 states to 67954 states and 78995 transitions. [2020-10-14 01:25:26,774 INFO L78 Accepts]: Start accepts. Automaton has 67954 states and 78995 transitions. Word has length 1734 [2020-10-14 01:25:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:25:26,775 INFO L479 AbstractCegarLoop]: Abstraction has 67954 states and 78995 transitions. [2020-10-14 01:25:26,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:25:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 67954 states and 78995 transitions. [2020-10-14 01:25:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1786 [2020-10-14 01:25:26,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:25:26,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:25:26,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:25:26,928 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:25:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:25:26,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1959065528, now seen corresponding path program 1 times [2020-10-14 01:25:26,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:25:26,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075902251] [2020-10-14 01:25:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:25:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1809 [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:32,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 01:25:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:25:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1803 [2020-10-14 01:25:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0