/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/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:45:38,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:45:38,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:45:38,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:45:38,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:45:38,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:45:38,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:45:38,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:45:38,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:45:38,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:45:38,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:45:38,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:45:38,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:45:38,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:45:38,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:45:38,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:45:38,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:45:38,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:45:38,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:45:38,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:45:38,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:45:38,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:45:38,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:45:38,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:45:38,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:45:38,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:45:38,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:45:38,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:45:38,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:45:38,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:45:38,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:45:38,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:45:38,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:45:38,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:45:38,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:45:38,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:45:38,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:45:38,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:45:38,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:45:38,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:45:38,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:45:38,864 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 17:45:38,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:45:38,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:45:38,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:45:38,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:45:38,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:45:38,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:45:38,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:45:38,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:45:38,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:45:38,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:45:38,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:45:38,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:45:38,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:45:38,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:45:38,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:45:38,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:45:38,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:45:38,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:45:38,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:45:38,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:45:38,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:45:38,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:45:38,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:45:38,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:45:38,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:45:38,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:45:38,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:45:38,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:45:38,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:45:38,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:45:39,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:45:39,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:45:39,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:45:39,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:45:39,435 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:45:39,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-10-28 17:45:39,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd68c9aa/f8d9b4a486084d349a891f6909df1e5e/FLAG4f8b6871e [2020-10-28 17:45:40,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:45:40,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-10-28 17:45:40,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd68c9aa/f8d9b4a486084d349a891f6909df1e5e/FLAG4f8b6871e [2020-10-28 17:45:40,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd68c9aa/f8d9b4a486084d349a891f6909df1e5e [2020-10-28 17:45:40,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:45:40,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:45:40,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:45:40,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:45:40,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:45:40,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bd64cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40, skipping insertion in model container [2020-10-28 17:45:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:45:40,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:45:40,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:45:40,809 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:45:40,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:45:40,929 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:45:40,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40 WrapperNode [2020-10-28 17:45:40,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:45:40,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:45:40,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:45:40,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:45:40,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:40,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:41,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:41,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (1/1) ... [2020-10-28 17:45:41,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:45:41,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:45:41,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:45:41,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:45:41,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (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 17:45:41,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:45:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:45:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:45:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:45:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:45:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:45:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:45:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:45:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 17:45:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:45:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:45:41,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:45:42,052 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:45:42,053 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:45:42,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:45:42 BoogieIcfgContainer [2020-10-28 17:45:42,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:45:42,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:45:42,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:45:42,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:45:42,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:45:40" (1/3) ... [2020-10-28 17:45:42,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f808bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:45:42, skipping insertion in model container [2020-10-28 17:45:42,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:45:40" (2/3) ... [2020-10-28 17:45:42,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f808bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:45:42, skipping insertion in model container [2020-10-28 17:45:42,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:45:42" (3/3) ... [2020-10-28 17:45:42,064 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-10-28 17:45:42,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:45:42,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:45:42,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:45:42,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:45:42,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:45:42,120 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:45:42,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:45:42,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:45:42,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:45:42,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:45:42,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:45:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-28 17:45:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 17:45:42,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:42,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:45:42,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:42,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:42,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1937602085, now seen corresponding path program 1 times [2020-10-28 17:45:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:42,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157917467] [2020-10-28 17:45:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:42,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:42,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 17:45:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-28 17:45:42,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:42,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:45:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:45:43,314 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:45:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:45:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:43,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:43,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:45:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:43,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:43,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:45:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:45:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:45:43,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:45:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:45:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:45:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:43,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:45:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:45:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:45:43,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:45:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:43,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:43,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:43,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:43,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:45:43,683 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 17:45:43,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157917467] [2020-10-28 17:45:43,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:45:43,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:45:43,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718300364] [2020-10-28 17:45:43,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:45:43,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:43,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:45:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:45:43,711 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 9 states. [2020-10-28 17:45:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:45,349 INFO L93 Difference]: Finished difference Result 250 states and 367 transitions. [2020-10-28 17:45:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:45:45,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-28 17:45:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:45,361 INFO L225 Difference]: With dead ends: 250 [2020-10-28 17:45:45,361 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 17:45:45,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:45:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 17:45:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-28 17:45:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 17:45:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 221 transitions. [2020-10-28 17:45:45,431 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 221 transitions. Word has length 75 [2020-10-28 17:45:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:45,432 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 221 transitions. [2020-10-28 17:45:45,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:45:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 221 transitions. [2020-10-28 17:45:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 17:45:45,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:45,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:45:45,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:45:45,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2139426019, now seen corresponding path program 1 times [2020-10-28 17:45:45,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:45,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752540912] [2020-10-28 17:45:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 17:45:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-28 17:45:46,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:45:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:45:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:45:46,778 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:45:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:46,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:45:46,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:46,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:45:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:46,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:46,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:45:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:45:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:45:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:46,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:45:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:45:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:45:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:45:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:47,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:47,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:47,186 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 17:45:47,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752540912] [2020-10-28 17:45:47,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:45:47,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 17:45:47,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021262654] [2020-10-28 17:45:47,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:45:47,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:47,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:45:47,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:45:47,191 INFO L87 Difference]: Start difference. First operand 146 states and 221 transitions. Second operand 15 states. [2020-10-28 17:45:47,509 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:45:47,776 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:45:48,163 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:45:48,481 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:45:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:50,862 INFO L93 Difference]: Finished difference Result 252 states and 371 transitions. [2020-10-28 17:45:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:45:50,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-28 17:45:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:50,867 INFO L225 Difference]: With dead ends: 252 [2020-10-28 17:45:50,868 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 17:45:50,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:45:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 17:45:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2020-10-28 17:45:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 17:45:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 181 transitions. [2020-10-28 17:45:50,907 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 181 transitions. Word has length 75 [2020-10-28 17:45:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:50,908 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 181 transitions. [2020-10-28 17:45:50,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:45:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 181 transitions. [2020-10-28 17:45:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:45:50,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:50,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:45:50,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:45:50,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1421284524, now seen corresponding path program 1 times [2020-10-28 17:45:50,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:50,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428925820] [2020-10-28 17:45:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:45:56,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:45:56,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 17:45:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:45:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 17:45:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:45:56,360 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:45:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:45:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:45:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:45:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:45:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:45:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:45:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:45:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:45:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:45:56,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:45:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:45:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:56,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:56,815 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 17:45:56,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428925820] [2020-10-28 17:45:56,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:45:56,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:45:56,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597728410] [2020-10-28 17:45:56,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:45:56,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:45:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:45:56,818 INFO L87 Difference]: Start difference. First operand 146 states and 181 transitions. Second operand 12 states. [2020-10-28 17:45:57,114 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:45:57,847 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 17:46:00,043 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:00,179 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:00,424 INFO L93 Difference]: Finished difference Result 316 states and 419 transitions. [2020-10-28 17:46:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:46:00,425 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-28 17:46:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:00,440 INFO L225 Difference]: With dead ends: 316 [2020-10-28 17:46:00,440 INFO L226 Difference]: Without dead ends: 228 [2020-10-28 17:46:00,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:46:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-28 17:46:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2020-10-28 17:46:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-28 17:46:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2020-10-28 17:46:00,522 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 114 [2020-10-28 17:46:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:00,523 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2020-10-28 17:46:00,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:46:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2020-10-28 17:46:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:46:00,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:00,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:46:00,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:46:00,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash -756900362, now seen corresponding path program 1 times [2020-10-28 17:46:00,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:00,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054793494] [2020-10-28 17:46:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:46:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 17:46:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:05,899 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:46:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:05,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:05,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:46:05,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:46:05,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:05,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:46:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:46:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:46:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:46:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:46:06,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:46:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:46:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:46:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:46:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:46:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:46:06,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:06,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:46:06,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:46:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:46:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:46:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:06,401 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 17:46:06,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054793494] [2020-10-28 17:46:06,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:46:06,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:46:06,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645066479] [2020-10-28 17:46:06,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:46:06,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:46:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:46:06,404 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand 12 states. [2020-10-28 17:46:06,705 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:46:08,968 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:46:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:09,767 INFO L93 Difference]: Finished difference Result 547 states and 744 transitions. [2020-10-28 17:46:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:46:09,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-28 17:46:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:09,771 INFO L225 Difference]: With dead ends: 547 [2020-10-28 17:46:09,771 INFO L226 Difference]: Without dead ends: 380 [2020-10-28 17:46:09,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:46:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-28 17:46:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 377. [2020-10-28 17:46:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-28 17:46:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 504 transitions. [2020-10-28 17:46:09,820 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 504 transitions. Word has length 114 [2020-10-28 17:46:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:09,821 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 504 transitions. [2020-10-28 17:46:09,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:46:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 504 transitions. [2020-10-28 17:46:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:46:09,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:09,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:46:09,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:46:09,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash 253173184, now seen corresponding path program 1 times [2020-10-28 17:46:09,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:09,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292863692] [2020-10-28 17:46:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:14,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:14,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:46:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:46:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,157 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:46:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:46:15,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:46:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:46:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:46:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:15,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:46:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:46:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:15,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:46:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:46:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:46:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:46:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:46:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:15,597 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 17:46:15,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292863692] [2020-10-28 17:46:15,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:46:15,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:46:15,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106957699] [2020-10-28 17:46:15,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:46:15,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:15,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:46:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:46:15,600 INFO L87 Difference]: Start difference. First operand 377 states and 504 transitions. Second operand 12 states. [2020-10-28 17:46:15,874 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:46:17,789 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:46:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:18,718 INFO L93 Difference]: Finished difference Result 991 states and 1364 transitions. [2020-10-28 17:46:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:46:18,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-28 17:46:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:18,731 INFO L225 Difference]: With dead ends: 991 [2020-10-28 17:46:18,731 INFO L226 Difference]: Without dead ends: 672 [2020-10-28 17:46:18,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:46:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-28 17:46:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 669. [2020-10-28 17:46:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-28 17:46:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 908 transitions. [2020-10-28 17:46:18,813 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 908 transitions. Word has length 114 [2020-10-28 17:46:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:18,813 INFO L481 AbstractCegarLoop]: Abstraction has 669 states and 908 transitions. [2020-10-28 17:46:18,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:46:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 908 transitions. [2020-10-28 17:46:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:46:18,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:18,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:46:18,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:46:18,815 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash 491988662, now seen corresponding path program 1 times [2020-10-28 17:46:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:18,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858573662] [2020-10-28 17:46:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:46:21,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:46:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2608 [2020-10-28 17:46:21,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:46:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:46:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,750 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:46:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:46:21,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:46:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:46:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:46:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:46:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:46:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:46:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:21,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:21,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:21,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:46:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:22,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:46:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:22,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:22,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:22,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:22,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:46:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:22,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:46:22,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:22,119 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 17:46:22,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858573662] [2020-10-28 17:46:22,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:46:22,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:46:22,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747912158] [2020-10-28 17:46:22,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:46:22,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:22,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:46:22,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:46:22,124 INFO L87 Difference]: Start difference. First operand 669 states and 908 transitions. Second operand 12 states. [2020-10-28 17:46:22,477 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:46:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:25,665 INFO L93 Difference]: Finished difference Result 1843 states and 2544 transitions. [2020-10-28 17:46:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:46:25,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-28 17:46:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:25,682 INFO L225 Difference]: With dead ends: 1843 [2020-10-28 17:46:25,682 INFO L226 Difference]: Without dead ends: 1232 [2020-10-28 17:46:25,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:46:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2020-10-28 17:46:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1229. [2020-10-28 17:46:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-28 17:46:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1676 transitions. [2020-10-28 17:46:25,832 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1676 transitions. Word has length 114 [2020-10-28 17:46:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:25,833 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1676 transitions. [2020-10-28 17:46:25,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:46:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1676 transitions. [2020-10-28 17:46:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:46:25,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:25,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:46:25,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:46:25,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash -960935636, now seen corresponding path program 1 times [2020-10-28 17:46:25,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:25,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970070367] [2020-10-28 17:46:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:46:27,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-28 17:46:27,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:46:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:46:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 17:46:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,512 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:46:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:27,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:46:27,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:46:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:46:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:46:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:46:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:27,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:46:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:46:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:27,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:27,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:27,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:27,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:27,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:46:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:28,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:28,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:46:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:46:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:46:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:28,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:28,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:46:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:28,214 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 17:46:28,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970070367] [2020-10-28 17:46:28,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:46:28,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-10-28 17:46:28,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562768947] [2020-10-28 17:46:28,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 17:46:28,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:28,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 17:46:28,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:46:28,217 INFO L87 Difference]: Start difference. First operand 1229 states and 1676 transitions. Second operand 22 states. [2020-10-28 17:46:28,610 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:46:28,946 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:46:29,249 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:46:29,618 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:46:29,975 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:46:30,323 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:46:30,650 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:46:30,821 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:31,231 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:31,606 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:31,950 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:32,155 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 17:46:32,770 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:33,551 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:46:33,861 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:46:34,687 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:46:35,072 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:46:35,819 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:36,131 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:46:36,738 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:46:37,631 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:38,295 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:46:39,152 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:39,531 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 17:46:39,941 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:46:41,063 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 17:46:41,217 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 17:46:41,435 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 17:46:41,575 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:41,873 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:46:42,026 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:46:42,982 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:46:43,372 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:46:43,933 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:46:44,127 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:46:45,578 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 17:46:45,907 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:46:46,229 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:46:47,948 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:48,090 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:46:48,257 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 17:46:48,596 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:46:49,544 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:46:49,694 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:49,847 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:46:50,084 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:50,238 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:46:50,917 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:46:51,091 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:51,299 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:46:51,457 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:52,235 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:46:52,386 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:46:52,595 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:52,756 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:53,348 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 17:46:53,526 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:46:53,696 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:46:54,105 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:46:54,837 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:46:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:56,366 INFO L93 Difference]: Finished difference Result 18396 states and 26998 transitions. [2020-10-28 17:46:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2020-10-28 17:46:56,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-10-28 17:46:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:56,487 INFO L225 Difference]: With dead ends: 18396 [2020-10-28 17:46:56,487 INFO L226 Difference]: Without dead ends: 17225 [2020-10-28 17:46:56,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8660 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=3899, Invalid=19053, Unknown=0, NotChecked=0, Total=22952 [2020-10-28 17:46:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17225 states. [2020-10-28 17:46:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17225 to 15653. [2020-10-28 17:46:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15653 states. [2020-10-28 17:46:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15653 states to 15653 states and 21644 transitions. [2020-10-28 17:46:58,265 INFO L78 Accepts]: Start accepts. Automaton has 15653 states and 21644 transitions. Word has length 114 [2020-10-28 17:46:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:58,265 INFO L481 AbstractCegarLoop]: Abstraction has 15653 states and 21644 transitions. [2020-10-28 17:46:58,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 17:46:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 15653 states and 21644 transitions. [2020-10-28 17:46:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 17:46:58,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:58,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:46:58,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:46:58,271 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1816918748, now seen corresponding path program 1 times [2020-10-28 17:46:58,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:58,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126587243] [2020-10-28 17:46:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-28 17:46:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:46:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,619 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:46:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:46:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:46:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:46:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:46:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:46:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:46:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:46:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:59,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:46:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:46:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:46:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:59,899 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 17:46:59,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126587243] [2020-10-28 17:46:59,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:46:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:46:59,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947210340] [2020-10-28 17:46:59,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:46:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:46:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:46:59,909 INFO L87 Difference]: Start difference. First operand 15653 states and 21644 transitions. Second operand 10 states. [2020-10-28 17:47:00,382 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 17:47:01,492 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:47:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:47:04,516 INFO L93 Difference]: Finished difference Result 39631 states and 54956 transitions. [2020-10-28 17:47:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:47:04,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 116 [2020-10-28 17:47:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:47:04,642 INFO L225 Difference]: With dead ends: 39631 [2020-10-28 17:47:04,643 INFO L226 Difference]: Without dead ends: 24036 [2020-10-28 17:47:04,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:47:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2020-10-28 17:47:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 24033. [2020-10-28 17:47:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24033 states. [2020-10-28 17:47:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24033 states to 24033 states and 33024 transitions. [2020-10-28 17:47:06,872 INFO L78 Accepts]: Start accepts. Automaton has 24033 states and 33024 transitions. Word has length 116 [2020-10-28 17:47:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:47:06,873 INFO L481 AbstractCegarLoop]: Abstraction has 24033 states and 33024 transitions. [2020-10-28 17:47:06,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:47:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 24033 states and 33024 transitions. [2020-10-28 17:47:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 17:47:06,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:47:06,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:47:06,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:47:06,875 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:47:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:47:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash 552848276, now seen corresponding path program 1 times [2020-10-28 17:47:06,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:47:06,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452239163] [2020-10-28 17:47:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:47:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:08,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:08,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 17:47:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:08,772 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:47:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:47:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:47:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:47:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:08,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:08,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:47:08,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:47:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:47:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:47:09,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:47:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:47:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:47:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:47:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:47:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:47:09,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:47:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:47:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:09,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:47:09,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:47:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:47:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:47:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:09,638 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 17:47:09,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452239163] [2020-10-28 17:47:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:47:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-10-28 17:47:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114101442] [2020-10-28 17:47:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:47:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:47:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:47:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:47:09,640 INFO L87 Difference]: Start difference. First operand 24033 states and 33024 transitions. Second operand 23 states. [2020-10-28 17:47:10,119 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:47:10,467 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:47:10,910 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:47:11,297 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:47:11,705 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:47:12,124 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:47:12,563 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:12,803 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:12,991 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:13,484 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:47:13,684 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:47:13,899 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:14,165 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:47:14,382 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:14,635 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:47:14,879 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:15,101 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:15,391 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 17:47:15,890 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:47:16,093 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:16,338 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:16,472 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:47:17,609 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:17,750 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 17:47:18,697 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:18,850 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:47:19,152 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:47:19,643 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:20,482 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:20,758 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:21,102 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:47:21,540 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:47:22,158 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:22,547 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:47:22,794 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:47:22,941 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:23,242 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:23,841 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:24,324 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 17:47:24,877 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:25,262 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:47:25,513 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:25,784 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:26,094 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:26,255 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:26,397 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:47:26,566 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:26,958 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:27,959 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:28,115 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:28,262 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:28,600 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:28,758 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:29,065 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:29,498 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:47:29,804 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:30,998 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 17:47:31,640 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:47:32,000 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:47:32,356 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:47:34,403 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:34,539 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:34,742 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:35,246 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:35,407 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 17:47:35,546 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:35,704 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 17:47:36,001 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:47:36,604 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:36,830 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:37,220 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 17:47:37,645 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:37,830 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:47:37,995 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 17:47:38,169 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 17:47:38,320 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 17:47:38,490 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 17:47:39,449 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:39,664 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 17:47:39,964 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:40,201 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:40,389 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 17:47:40,549 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:40,723 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:41,105 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 17:47:41,282 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:41,884 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 17:47:42,173 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:42,400 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:42,592 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 17:47:42,759 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:43,073 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:47:43,248 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:43,768 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 17:47:44,063 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 17:47:44,256 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 17:47:44,557 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 17:47:44,727 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:47:45,447 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 17:47:45,632 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 17:47:45,803 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 17:47:45,966 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 17:47:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:47:47,918 INFO L93 Difference]: Finished difference Result 63032 states and 87902 transitions. [2020-10-28 17:47:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2020-10-28 17:47:47,919 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2020-10-28 17:47:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:47:48,086 INFO L225 Difference]: With dead ends: 63032 [2020-10-28 17:47:48,086 INFO L226 Difference]: Without dead ends: 39057 [2020-10-28 17:47:48,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10259 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=4141, Invalid=22919, Unknown=0, NotChecked=0, Total=27060 [2020-10-28 17:47:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39057 states. [2020-10-28 17:47:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39057 to 37391. [2020-10-28 17:47:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37391 states. [2020-10-28 17:47:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37391 states to 37391 states and 51840 transitions. [2020-10-28 17:47:51,511 INFO L78 Accepts]: Start accepts. Automaton has 37391 states and 51840 transitions. Word has length 116 [2020-10-28 17:47:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:47:51,511 INFO L481 AbstractCegarLoop]: Abstraction has 37391 states and 51840 transitions. [2020-10-28 17:47:51,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:47:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 37391 states and 51840 transitions. [2020-10-28 17:47:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 17:47:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:47:51,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:47:51,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:47:51,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:47:51,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:47:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash 683498496, now seen corresponding path program 1 times [2020-10-28 17:47:51,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:47:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576689044] [2020-10-28 17:47:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:47:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4936 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:47:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 17:47:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,769 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:47:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:47:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:47:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:47:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:47:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:47:56,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:47:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:47:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:47:56,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:47:56,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:47:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 17:47:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:47:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:47:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:47:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:47:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:47:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:56,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:47:56,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:56,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:47:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:47:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:56,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:56,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:47:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:47:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:47:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:57,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:57,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:47:57,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:47:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:57,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:47:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:57,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:57,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:47:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 17:47:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:47:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:47:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:47:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:47:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:47:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:47:57,149 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 17:47:57,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576689044] [2020-10-28 17:47:57,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:47:57,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:47:57,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953484478] [2020-10-28 17:47:57,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:47:57,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:47:57,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:47:57,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:47:57,151 INFO L87 Difference]: Start difference. First operand 37391 states and 51840 transitions. Second operand 12 states. [2020-10-28 17:47:57,459 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:47:58,230 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 17:47:58,400 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 17:47:59,860 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 17:48:00,014 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:48:00,254 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 17:48:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:48:05,330 INFO L93 Difference]: Finished difference Result 108459 states and 150882 transitions. [2020-10-28 17:48:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:48:05,331 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-28 17:48:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:48:05,657 INFO L225 Difference]: With dead ends: 108459 [2020-10-28 17:48:05,658 INFO L226 Difference]: Without dead ends: 71126 [2020-10-28 17:48:05,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:48:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71126 states. [2020-10-28 17:48:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71126 to 71123. [2020-10-28 17:48:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71123 states. [2020-10-28 17:48:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71123 states to 71123 states and 97628 transitions. [2020-10-28 17:48:12,476 INFO L78 Accepts]: Start accepts. Automaton has 71123 states and 97628 transitions. Word has length 116 [2020-10-28 17:48:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:48:12,476 INFO L481 AbstractCegarLoop]: Abstraction has 71123 states and 97628 transitions. [2020-10-28 17:48:12,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:48:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 71123 states and 97628 transitions. [2020-10-28 17:48:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 17:48:12,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:48:12,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:48:12,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:48:12,480 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:48:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:48:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash 639833720, now seen corresponding path program 1 times [2020-10-28 17:48:12,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:48:12,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716656591] [2020-10-28 17:48:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:48:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3860 [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:48:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:48:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:48:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,669 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:48:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:48:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:48:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:48:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:48:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:48:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:48:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:16,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:48:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:48:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:48:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:48:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:48:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:48:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:48:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:16,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:48:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:48:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 17:48:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:48:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:16,998 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 17:48:16,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716656591] [2020-10-28 17:48:16,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:48:16,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:48:16,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258536471] [2020-10-28 17:48:16,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:48:16,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:48:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:48:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:48:17,000 INFO L87 Difference]: Start difference. First operand 71123 states and 97628 transitions. Second operand 12 states. [2020-10-28 17:48:17,326 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:48:19,201 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 17:48:19,356 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 17:48:20,244 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 17:48:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:48:30,667 INFO L93 Difference]: Finished difference Result 206917 states and 284704 transitions. [2020-10-28 17:48:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:48:30,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-28 17:48:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:48:31,405 INFO L225 Difference]: With dead ends: 206917 [2020-10-28 17:48:31,405 INFO L226 Difference]: Without dead ends: 135852 [2020-10-28 17:48:31,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:48:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135852 states. [2020-10-28 17:48:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135852 to 135849. [2020-10-28 17:48:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135849 states. [2020-10-28 17:48:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135849 states to 135849 states and 184252 transitions. [2020-10-28 17:48:44,000 INFO L78 Accepts]: Start accepts. Automaton has 135849 states and 184252 transitions. Word has length 116 [2020-10-28 17:48:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:48:44,001 INFO L481 AbstractCegarLoop]: Abstraction has 135849 states and 184252 transitions. [2020-10-28 17:48:44,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:48:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 135849 states and 184252 transitions. [2020-10-28 17:48:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 17:48:44,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:48:44,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:48:44,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:48:44,003 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:48:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:48:44,003 INFO L82 PathProgramCache]: Analyzing trace with hash -531104803, now seen corresponding path program 1 times [2020-10-28 17:48:44,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:48:44,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344924572] [2020-10-28 17:48:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:48:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:44,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:48:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:48:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 17:48:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 243 [2020-10-28 17:48:45,043 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:48:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:48:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:48:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:48:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:48:45,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:48:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:48:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:48:45,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:48:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:48:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:48:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:48:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:48:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:48:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:48:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:48:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:48:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:48:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:48:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:48:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:48:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:48:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:48:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:48:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:48:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:48:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:48:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:48:45,373 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 17:48:45,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344924572] [2020-10-28 17:48:45,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:48:45,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:48:45,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518144197] [2020-10-28 17:48:45,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:48:45,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:48:45,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:48:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:48:45,375 INFO L87 Difference]: Start difference. First operand 135849 states and 184252 transitions. Second operand 12 states. [2020-10-28 17:48:45,699 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:48:46,281 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-28 17:48:46,535 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-28 17:48:48,373 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 17:48:49,078 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:49:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:03,268 INFO L93 Difference]: Finished difference Result 304702 states and 414423 transitions. [2020-10-28 17:49:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 17:49:03,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-10-28 17:49:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:03,923 INFO L225 Difference]: With dead ends: 304702 [2020-10-28 17:49:03,924 INFO L226 Difference]: Without dead ends: 168911 [2020-10-28 17:49:04,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:49:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168911 states.