/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:52:03,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:52:03,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:52:03,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:52:03,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:52:03,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:52:03,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:52:03,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:52:03,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:52:03,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:52:03,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:52:03,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:52:03,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:52:03,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:52:03,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:52:03,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:52:03,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:52:03,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:52:03,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:52:03,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:52:03,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:52:03,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:52:03,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:52:03,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:52:03,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:52:03,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:52:03,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:52:03,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:52:03,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:52:03,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:52:03,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:52:03,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:52:03,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:52:03,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:52:03,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:52:03,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:52:03,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:52:03,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:52:03,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:52:03,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:52:03,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:52:03,821 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 [2020-10-28 13:52:03,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:52:03,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:52:03,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:52:03,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:52:03,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:52:03,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:52:03,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:52:03,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:52:03,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:52:03,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:52:03,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:52:03,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:52:03,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:52:03,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:52:03,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:52:03,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:52:03,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:52:03,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:52:03,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:52:03,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:52:03,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:52:03,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:52:03,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:52:03,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:52:03,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:52:03,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:52:03,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:52:03,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:52:03,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:52:03,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:52:04,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:52:04,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:52:04,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:52:04,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:52:04,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:52:04,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-28 13:52:04,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb2bbc8fe/81a36c46eb8b44ba9c8b91ca5541af01/FLAG802e98b52 [2020-10-28 13:52:05,271 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:52:05,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-28 13:52:05,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb2bbc8fe/81a36c46eb8b44ba9c8b91ca5541af01/FLAG802e98b52 [2020-10-28 13:52:05,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb2bbc8fe/81a36c46eb8b44ba9c8b91ca5541af01 [2020-10-28 13:52:05,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:52:05,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:52:05,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:52:05,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:52:05,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:52:05,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:52:05" (1/1) ... [2020-10-28 13:52:05,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6c2956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:05, skipping insertion in model container [2020-10-28 13:52:05,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:52:05" (1/1) ... [2020-10-28 13:52:05,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:52:05,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:52:07,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:52:07,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:52:07,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:52:07,582 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:52:07,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07 WrapperNode [2020-10-28 13:52:07,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:52:07,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:52:07,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:52:07,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:52:07,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (1/1) ... [2020-10-28 13:52:07,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:52:07,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:52:07,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:52:07,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:52:07,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (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 [2020-10-28 13:52:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:52:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:52:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:52:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:52:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:52:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:52:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:52:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:52:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:52:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:52:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:52:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:52:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:52:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:52:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:52:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:52:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:52:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:52:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:52:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:52:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:52:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:52:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:52:11,461 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:52:11,461 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:52:11,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:52:11 BoogieIcfgContainer [2020-10-28 13:52:11,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:52:11,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:52:11,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:52:11,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:52:11,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:52:05" (1/3) ... [2020-10-28 13:52:11,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d604a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:52:11, skipping insertion in model container [2020-10-28 13:52:11,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:07" (2/3) ... [2020-10-28 13:52:11,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d604a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:52:11, skipping insertion in model container [2020-10-28 13:52:11,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:52:11" (3/3) ... [2020-10-28 13:52:11,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label24.c [2020-10-28 13:52:11,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:52:11,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:52:11,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:52:11,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:52:11,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:52:11,544 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:52:11,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:52:11,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:52:11,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:52:11,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:52:11,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:52:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:52:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 13:52:11,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:11,591 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] [2020-10-28 13:52:11,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash 463481712, now seen corresponding path program 1 times [2020-10-28 13:52:11,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:11,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542644774] [2020-10-28 13:52:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 13:52:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-28 13:52:12,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:12,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 13:52:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:52:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:12,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:52:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:12,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:12,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542644774] [2020-10-28 13:52:12,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:12,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:52:12,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92058702] [2020-10-28 13:52:12,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:52:12,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:12,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:52:12,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:52:12,542 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:52:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:20,774 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-28 13:52:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:52:20,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 13:52:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:20,813 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:52:20,814 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:52:20,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:52:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:52:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-28 13:52:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-28 13:52:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-28 13:52:20,999 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 58 [2020-10-28 13:52:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:21,001 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-28 13:52:21,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:52:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-28 13:52:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 13:52:21,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:21,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:21,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:52:21,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:21,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1587550226, now seen corresponding path program 1 times [2020-10-28 13:52:21,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:21,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004550115] [2020-10-28 13:52:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:22,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:22,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:52:22,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-28 13:52:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:22,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:52:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:52:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:52:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:22,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:22,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:52:22,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:52:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:52:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:22,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:52:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:22,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004550115] [2020-10-28 13:52:22,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:22,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:22,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617789925] [2020-10-28 13:52:22,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:22,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:22,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:22,709 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-28 13:52:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:39,910 INFO L93 Difference]: Finished difference Result 4339 states and 7091 transitions. [2020-10-28 13:52:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:39,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 13:52:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:39,930 INFO L225 Difference]: With dead ends: 4339 [2020-10-28 13:52:39,931 INFO L226 Difference]: Without dead ends: 2916 [2020-10-28 13:52:39,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-10-28 13:52:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2881. [2020-10-28 13:52:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2881 states. [2020-10-28 13:52:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3965 transitions. [2020-10-28 13:52:40,054 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3965 transitions. Word has length 127 [2020-10-28 13:52:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:40,056 INFO L481 AbstractCegarLoop]: Abstraction has 2881 states and 3965 transitions. [2020-10-28 13:52:40,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3965 transitions. [2020-10-28 13:52:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 13:52:40,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:40,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:40,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:52:40,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:40,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1450107316, now seen corresponding path program 1 times [2020-10-28 13:52:40,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:40,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866445451] [2020-10-28 13:52:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:52:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-28 13:52:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:52:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:40,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:40,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:40,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:52:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:52:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:41,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:52:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:41,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866445451] [2020-10-28 13:52:41,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:41,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:41,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437340276] [2020-10-28 13:52:41,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:41,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:41,197 INFO L87 Difference]: Start difference. First operand 2881 states and 3965 transitions. Second operand 7 states. [2020-10-28 13:52:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:53,793 INFO L93 Difference]: Finished difference Result 8763 states and 12218 transitions. [2020-10-28 13:52:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:53,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 13:52:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:53,824 INFO L225 Difference]: With dead ends: 8763 [2020-10-28 13:52:53,825 INFO L226 Difference]: Without dead ends: 5888 [2020-10-28 13:52:53,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2020-10-28 13:52:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5814. [2020-10-28 13:52:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5814 states. [2020-10-28 13:52:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7376 transitions. [2020-10-28 13:52:53,988 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7376 transitions. Word has length 130 [2020-10-28 13:52:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:53,988 INFO L481 AbstractCegarLoop]: Abstraction has 5814 states and 7376 transitions. [2020-10-28 13:52:53,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7376 transitions. [2020-10-28 13:52:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 13:52:53,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:53,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:53,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:52:53,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1145811280, now seen corresponding path program 1 times [2020-10-28 13:52:53,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:53,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930587784] [2020-10-28 13:52:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:54,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:52:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:54,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:54,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:54,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:52:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:54,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:52:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:52:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:55,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930587784] [2020-10-28 13:52:55,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:55,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:55,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806636497] [2020-10-28 13:52:55,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:55,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:55,135 INFO L87 Difference]: Start difference. First operand 5814 states and 7376 transitions. Second operand 7 states. [2020-10-28 13:53:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:13,488 INFO L93 Difference]: Finished difference Result 17016 states and 22119 transitions. [2020-10-28 13:53:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:53:13,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-28 13:53:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:13,544 INFO L225 Difference]: With dead ends: 17016 [2020-10-28 13:53:13,544 INFO L226 Difference]: Without dead ends: 11208 [2020-10-28 13:53:13,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2020-10-28 13:53:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 10377. [2020-10-28 13:53:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10377 states. [2020-10-28 13:53:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10377 states to 10377 states and 12679 transitions. [2020-10-28 13:53:13,879 INFO L78 Accepts]: Start accepts. Automaton has 10377 states and 12679 transitions. Word has length 148 [2020-10-28 13:53:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:13,882 INFO L481 AbstractCegarLoop]: Abstraction has 10377 states and 12679 transitions. [2020-10-28 13:53:13,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 10377 states and 12679 transitions. [2020-10-28 13:53:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 13:53:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:13,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:53:13,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:53:13,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash 522802118, now seen corresponding path program 1 times [2020-10-28 13:53:13,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:13,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553288782] [2020-10-28 13:53:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:53:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:53:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:16,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:53:17,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:17,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:53:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:17,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:53:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:53:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:17,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:53:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:53:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:53:17,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553288782] [2020-10-28 13:53:17,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:17,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281435373] [2020-10-28 13:53:17,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:17,687 INFO L87 Difference]: Start difference. First operand 10377 states and 12679 transitions. Second operand 7 states. [2020-10-28 13:53:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:32,849 INFO L93 Difference]: Finished difference Result 22513 states and 28229 transitions. [2020-10-28 13:53:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:32,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-28 13:53:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:32,923 INFO L225 Difference]: With dead ends: 22513 [2020-10-28 13:53:32,923 INFO L226 Difference]: Without dead ends: 12142 [2020-10-28 13:53:32,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:53:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2020-10-28 13:53:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 11815. [2020-10-28 13:53:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11815 states. [2020-10-28 13:53:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11815 states to 11815 states and 14136 transitions. [2020-10-28 13:53:33,277 INFO L78 Accepts]: Start accepts. Automaton has 11815 states and 14136 transitions. Word has length 253 [2020-10-28 13:53:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:33,277 INFO L481 AbstractCegarLoop]: Abstraction has 11815 states and 14136 transitions. [2020-10-28 13:53:33,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11815 states and 14136 transitions. [2020-10-28 13:53:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-28 13:53:33,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:33,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:53:33,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:53:33,287 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2080335526, now seen corresponding path program 1 times [2020-10-28 13:53:33,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:33,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558715789] [2020-10-28 13:53:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:37,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:37,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-28 13:53:37,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:53:37,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4513 [2020-10-28 13:53:37,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:37,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:53:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:53:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:53:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:53:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:53:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:53:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:38,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:53:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:53:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 273 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:53:39,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558715789] [2020-10-28 13:53:39,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:39,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:53:39,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498482716] [2020-10-28 13:53:39,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:53:39,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:53:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:53:39,102 INFO L87 Difference]: Start difference. First operand 11815 states and 14136 transitions. Second operand 8 states. [2020-10-28 13:54:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:00,162 INFO L93 Difference]: Finished difference Result 30183 states and 38423 transitions. [2020-10-28 13:54:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 13:54:00,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 439 [2020-10-28 13:54:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:00,228 INFO L225 Difference]: With dead ends: 30183 [2020-10-28 13:54:00,228 INFO L226 Difference]: Without dead ends: 18206 [2020-10-28 13:54:00,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:54:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18206 states. [2020-10-28 13:54:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18206 to 16685. [2020-10-28 13:54:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16685 states. [2020-10-28 13:54:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16685 states to 16685 states and 18415 transitions. [2020-10-28 13:54:00,654 INFO L78 Accepts]: Start accepts. Automaton has 16685 states and 18415 transitions. Word has length 439 [2020-10-28 13:54:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:00,655 INFO L481 AbstractCegarLoop]: Abstraction has 16685 states and 18415 transitions. [2020-10-28 13:54:00,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:54:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16685 states and 18415 transitions. [2020-10-28 13:54:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-28 13:54:00,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:00,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:54:00,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:54:00,693 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash 405887426, now seen corresponding path program 1 times [2020-10-28 13:54:00,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:00,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447418782] [2020-10-28 13:54:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-28 13:54:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:54:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-28 13:54:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:54:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:54:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:06,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:54:06,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:54:06,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 13:54:06,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:54:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:54:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:07,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:07,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:54:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:07,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:54:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:54:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 13:54:08,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447418782] [2020-10-28 13:54:08,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:08,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:08,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428412881] [2020-10-28 13:54:08,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:08,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:08,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:08,182 INFO L87 Difference]: Start difference. First operand 16685 states and 18415 transitions. Second operand 7 states. [2020-10-28 13:54:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:20,055 INFO L93 Difference]: Finished difference Result 36418 states and 41289 transitions. [2020-10-28 13:54:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:54:20,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 982 [2020-10-28 13:54:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:20,120 INFO L225 Difference]: With dead ends: 36418 [2020-10-28 13:54:20,120 INFO L226 Difference]: Without dead ends: 21151 [2020-10-28 13:54:20,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21151 states. [2020-10-28 13:54:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21151 to 21091. [2020-10-28 13:54:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21091 states. [2020-10-28 13:54:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21091 states to 21091 states and 23607 transitions. [2020-10-28 13:54:20,560 INFO L78 Accepts]: Start accepts. Automaton has 21091 states and 23607 transitions. Word has length 982 [2020-10-28 13:54:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:20,562 INFO L481 AbstractCegarLoop]: Abstraction has 21091 states and 23607 transitions. [2020-10-28 13:54:20,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 21091 states and 23607 transitions. [2020-10-28 13:54:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-28 13:54:20,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:20,607 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:54:20,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:54:20,608 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1371426180, now seen corresponding path program 1 times [2020-10-28 13:54:20,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:20,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879716334] [2020-10-28 13:54:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:24,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:24,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-28 13:54:24,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4144 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:54:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:25,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:25,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:54:25,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:25,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:54:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:54:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:25,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:54:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:54:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:54:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:26,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:54:26,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:54:26,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:54:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:54:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 13:54:26,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879716334] [2020-10-28 13:54:26,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:26,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:26,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698308627] [2020-10-28 13:54:26,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:26,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:26,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:26,944 INFO L87 Difference]: Start difference. First operand 21091 states and 23607 transitions. Second operand 7 states. [2020-10-28 13:54:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:40,575 INFO L93 Difference]: Finished difference Result 44496 states and 50136 transitions. [2020-10-28 13:54:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:40,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-28 13:54:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:40,779 INFO L225 Difference]: With dead ends: 44496 [2020-10-28 13:54:40,779 INFO L226 Difference]: Without dead ends: 24823 [2020-10-28 13:54:40,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24823 states. [2020-10-28 13:54:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24823 to 24725. [2020-10-28 13:54:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24725 states. [2020-10-28 13:54:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24725 states to 24725 states and 27522 transitions. [2020-10-28 13:54:41,217 INFO L78 Accepts]: Start accepts. Automaton has 24725 states and 27522 transitions. Word has length 989 [2020-10-28 13:54:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:41,224 INFO L481 AbstractCegarLoop]: Abstraction has 24725 states and 27522 transitions. [2020-10-28 13:54:41,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 24725 states and 27522 transitions. [2020-10-28 13:54:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-28 13:54:41,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:41,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:54:41,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:54:41,243 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1958442366, now seen corresponding path program 1 times [2020-10-28 13:54:41,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:41,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107098794] [2020-10-28 13:54:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:46,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:46,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1082 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 13:54:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:54:46,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:46,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:46,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:46,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:54:46,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:54:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:54:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:54:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:47,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:54:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:54:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:54:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:54:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 13:54:48,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107098794] [2020-10-28 13:54:48,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:48,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:48,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866542227] [2020-10-28 13:54:48,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:48,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:48,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:48,498 INFO L87 Difference]: Start difference. First operand 24725 states and 27522 transitions. Second operand 7 states. [2020-10-28 13:55:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:04,746 INFO L93 Difference]: Finished difference Result 53167 states and 60375 transitions. [2020-10-28 13:55:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:55:04,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-28 13:55:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:04,837 INFO L225 Difference]: With dead ends: 53167 [2020-10-28 13:55:04,837 INFO L226 Difference]: Without dead ends: 29860 [2020-10-28 13:55:04,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29860 states. [2020-10-28 13:55:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29860 to 29813. [2020-10-28 13:55:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29813 states. [2020-10-28 13:55:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29813 states to 29813 states and 33386 transitions. [2020-10-28 13:55:05,372 INFO L78 Accepts]: Start accepts. Automaton has 29813 states and 33386 transitions. Word has length 1058 [2020-10-28 13:55:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:05,374 INFO L481 AbstractCegarLoop]: Abstraction has 29813 states and 33386 transitions. [2020-10-28 13:55:05,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 29813 states and 33386 transitions. [2020-10-28 13:55:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-10-28 13:55:05,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:05,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:55:05,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:55:05,390 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1358117304, now seen corresponding path program 1 times [2020-10-28 13:55:05,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:05,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807517167] [2020-10-28 13:55:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1089 [2020-10-28 13:55:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:55:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:55:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:10,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:10,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:10,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:10,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:55:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:55:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:55:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:55:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:55:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:55:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:55:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 13:55:12,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807517167] [2020-10-28 13:55:12,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:12,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:55:12,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820828850] [2020-10-28 13:55:12,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:55:12,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:55:12,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:55:12,809 INFO L87 Difference]: Start difference. First operand 29813 states and 33386 transitions. Second operand 8 states. [2020-10-28 13:55:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:30,008 INFO L93 Difference]: Finished difference Result 64681 states and 73004 transitions. [2020-10-28 13:55:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:55:30,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1065 [2020-10-28 13:55:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:30,095 INFO L225 Difference]: With dead ends: 64681 [2020-10-28 13:55:30,095 INFO L226 Difference]: Without dead ends: 36286 [2020-10-28 13:55:30,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:55:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36286 states. [2020-10-28 13:55:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36286 to 36228. [2020-10-28 13:55:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36228 states. [2020-10-28 13:55:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36228 states to 36228 states and 40716 transitions. [2020-10-28 13:55:30,786 INFO L78 Accepts]: Start accepts. Automaton has 36228 states and 40716 transitions. Word has length 1065 [2020-10-28 13:55:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:30,787 INFO L481 AbstractCegarLoop]: Abstraction has 36228 states and 40716 transitions. [2020-10-28 13:55:30,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:55:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 36228 states and 40716 transitions. [2020-10-28 13:55:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-28 13:55:30,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:30,804 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:55:30,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:55:30,805 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash -362513210, now seen corresponding path program 1 times [2020-10-28 13:55:30,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:30,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218371486] [2020-10-28 13:55:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3877 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:55:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:55:35,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:55:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:55:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:55:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:55:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:55:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:55:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:55:35,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:55:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:55:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:55:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 362 proven. 75 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2020-10-28 13:55:36,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218371486] [2020-10-28 13:55:36,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:36,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:36,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714574244] [2020-10-28 13:55:36,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:36,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:36,495 INFO L87 Difference]: Start difference. First operand 36228 states and 40716 transitions. Second operand 7 states. [2020-10-28 13:55:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:51,293 INFO L93 Difference]: Finished difference Result 88238 states and 100870 transitions. [2020-10-28 13:55:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:55:51,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1086 [2020-10-28 13:55:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:51,421 INFO L225 Difference]: With dead ends: 88238 [2020-10-28 13:55:51,421 INFO L226 Difference]: Without dead ends: 53428 [2020-10-28 13:55:51,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53428 states.