/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.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:43:11,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:43:11,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:43:11,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:43:11,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:43:11,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:43:11,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:43:11,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:43:11,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:43:11,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:43:11,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:43:11,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:43:11,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:43:11,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:43:11,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:43:11,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:43:11,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:43:11,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:43:11,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:43:11,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:43:11,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:43:11,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:43:11,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:43:11,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:43:11,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:43:11,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:43:11,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:43:11,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:43:11,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:43:11,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:43:11,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:43:11,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:43:11,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:43:11,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:43:11,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:43:11,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:43:11,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:43:11,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:43:11,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:43:11,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:43:11,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:43:11,712 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 17:43:11,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:43:11,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:43:11,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:43:11,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:43:11,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:43:11,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:43:11,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:43:11,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:43:11,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:43:11,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:43:11,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:43:11,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:43:11,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:43:11,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:43:11,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:43:11,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:43:11,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:43:11,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:43:11,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:43:11,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:43:11,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:43:11,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:43:11,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:43:11,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:43:11,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:43:11,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:43:11,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:43:11,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:43:11,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:43:11,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:43:12,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:43:12,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:43:12,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:43:12,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:43:12,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:43:12,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:43:12,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecddb59f6/68b5805e846e4da29d30bab426d001f2/FLAG22ff5af97 [2020-10-28 17:43:12,988 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:43:12,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:43:13,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecddb59f6/68b5805e846e4da29d30bab426d001f2/FLAG22ff5af97 [2020-10-28 17:43:13,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecddb59f6/68b5805e846e4da29d30bab426d001f2 [2020-10-28 17:43:13,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:43:13,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:43:13,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:43:13,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:43:13,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:43:13,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74808f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13, skipping insertion in model container [2020-10-28 17:43:13,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:43:13,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:43:13,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:43:13,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:43:13,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:43:13,792 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:43:13,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13 WrapperNode [2020-10-28 17:43:13,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:43:13,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:43:13,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:43:13,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:43:13,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (1/1) ... [2020-10-28 17:43:13,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:43:13,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:43:13,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:43:13,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:43:13,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (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 17:43:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:43:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:43:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:43:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:43:14,051 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:43:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:43:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:43:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 17:43:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:43:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:43:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:43:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:43:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:43:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:43:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:43:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:43:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:43:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:43:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:43:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:43:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:43:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:43:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:43:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:43:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:43:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:43:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 17:43:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:43:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:43:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:43:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:43:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:43:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:43:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:43:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:43:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:43:15,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:43:15,008 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:43:15,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:43:15 BoogieIcfgContainer [2020-10-28 17:43:15,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:43:15,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:43:15,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:43:15,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:43:15,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:43:13" (1/3) ... [2020-10-28 17:43:15,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbe8645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:43:15, skipping insertion in model container [2020-10-28 17:43:15,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:43:13" (2/3) ... [2020-10-28 17:43:15,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbe8645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:43:15, skipping insertion in model container [2020-10-28 17:43:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:43:15" (3/3) ... [2020-10-28 17:43:15,019 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:43:15,032 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:43:15,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:43:15,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:43:15,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:43:15,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:43:15,080 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:43:15,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:43:15,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:43:15,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:43:15,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:43:15,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:43:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-28 17:43:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 17:43:15,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:15,113 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] [2020-10-28 17:43:15,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash 894184064, now seen corresponding path program 1 times [2020-10-28 17:43:15,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:15,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225349275] [2020-10-28 17:43:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 17:43:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 17:43:15,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:15,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:43:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:43:16,137 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:43:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:16,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:43:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:16,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:43:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:16,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:43:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:16,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:16,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:43:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:16,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:16,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:43:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:16,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:16,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:16,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:16,476 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 17:43:16,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225349275] [2020-10-28 17:43:16,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:16,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:43:16,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892945571] [2020-10-28 17:43:16,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:43:16,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:43:16,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:43:16,504 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 7 states. [2020-10-28 17:43:17,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:17,513 INFO L93 Difference]: Finished difference Result 187 states and 270 transitions. [2020-10-28 17:43:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:43:17,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-28 17:43:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:17,526 INFO L225 Difference]: With dead ends: 187 [2020-10-28 17:43:17,526 INFO L226 Difference]: Without dead ends: 109 [2020-10-28 17:43:17,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:43:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-28 17:43:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-28 17:43:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 17:43:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 157 transitions. [2020-10-28 17:43:17,598 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 157 transitions. Word has length 61 [2020-10-28 17:43:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:17,599 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 157 transitions. [2020-10-28 17:43:17,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:43:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 157 transitions. [2020-10-28 17:43:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 17:43:17,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:17,602 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] [2020-10-28 17:43:17,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:43:17,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1472510530, now seen corresponding path program 1 times [2020-10-28 17:43:17,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:17,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134954781] [2020-10-28 17:43:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:43:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:43:18,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,566 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:18,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:43:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:18,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:18,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:43:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:43:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:43:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:18,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:18,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:43:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 17:43:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:43:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:18,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:18,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:43:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:43:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:18,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:43:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:19,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:19,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:19,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:19,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:19,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:19,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:19,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:19,060 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 17:43:19,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134954781] [2020-10-28 17:43:19,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:19,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:43:19,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573568194] [2020-10-28 17:43:19,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:43:19,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:43:19,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:43:19,067 INFO L87 Difference]: Start difference. First operand 108 states and 157 transitions. Second operand 13 states. [2020-10-28 17:43:19,349 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:43:19,686 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-28 17:43:20,077 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:43:20,301 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-28 17:43:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:21,665 INFO L93 Difference]: Finished difference Result 182 states and 258 transitions. [2020-10-28 17:43:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:43:21,666 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-28 17:43:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:21,668 INFO L225 Difference]: With dead ends: 182 [2020-10-28 17:43:21,669 INFO L226 Difference]: Without dead ends: 109 [2020-10-28 17:43:21,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:43:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-28 17:43:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-28 17:43:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 17:43:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2020-10-28 17:43:21,715 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 61 [2020-10-28 17:43:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:21,716 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2020-10-28 17:43:21,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:43:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2020-10-28 17:43:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:43:21,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:21,729 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] [2020-10-28 17:43:21,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:43:21,729 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:21,730 INFO L82 PathProgramCache]: Analyzing trace with hash -627935559, now seen corresponding path program 1 times [2020-10-28 17:43:21,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:21,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634938406] [2020-10-28 17:43:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:43:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:43:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2407 [2020-10-28 17:43:24,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:43:24,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:43:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:24,453 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:24,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:43:24,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:43:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:43:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:24,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:24,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:24,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:43:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:43:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:43:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:24,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,767 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 17:43:24,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634938406] [2020-10-28 17:43:24,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:24,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:43:24,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850723729] [2020-10-28 17:43:24,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:43:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:43:24,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:43:24,770 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand 10 states. [2020-10-28 17:43:24,988 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:43:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:26,672 INFO L93 Difference]: Finished difference Result 238 states and 314 transitions. [2020-10-28 17:43:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:43:26,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-28 17:43:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:26,678 INFO L225 Difference]: With dead ends: 238 [2020-10-28 17:43:26,678 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 17:43:26,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:43:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 17:43:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 166. [2020-10-28 17:43:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 17:43:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2020-10-28 17:43:26,711 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 83 [2020-10-28 17:43:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:26,712 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2020-10-28 17:43:26,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:43:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2020-10-28 17:43:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:43:26,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:26,714 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] [2020-10-28 17:43:26,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:43:26,715 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:26,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:26,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1373518289, now seen corresponding path program 1 times [2020-10-28 17:43:26,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:26,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407279643] [2020-10-28 17:43:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:27,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:27,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:43:27,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 17:43:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:27,901 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:27,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:27,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:27,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:27,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:43:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:43:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:43:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:43:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:43:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:43:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:28,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:28,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:28,438 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 17:43:28,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407279643] [2020-10-28 17:43:28,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:28,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-28 17:43:28,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716188410] [2020-10-28 17:43:28,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:43:28,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:43:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:43:28,441 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand 18 states. [2020-10-28 17:43:28,676 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:43:28,896 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:43:29,096 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:43:29,300 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:43:31,498 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-28 17:43:31,682 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:43:31,954 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:43:35,684 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:43:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:39,308 INFO L93 Difference]: Finished difference Result 1487 states and 2184 transitions. [2020-10-28 17:43:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-28 17:43:39,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-28 17:43:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:39,325 INFO L225 Difference]: With dead ends: 1487 [2020-10-28 17:43:39,325 INFO L226 Difference]: Without dead ends: 1362 [2020-10-28 17:43:39,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1421, Invalid=5551, Unknown=0, NotChecked=0, Total=6972 [2020-10-28 17:43:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-10-28 17:43:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1176. [2020-10-28 17:43:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-28 17:43:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1630 transitions. [2020-10-28 17:43:39,547 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1630 transitions. Word has length 83 [2020-10-28 17:43:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:39,548 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1630 transitions. [2020-10-28 17:43:39,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:43:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1630 transitions. [2020-10-28 17:43:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:43:39,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:39,550 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] [2020-10-28 17:43:39,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:43:39,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:39,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:39,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1101819615, now seen corresponding path program 1 times [2020-10-28 17:43:39,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:39,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186993001] [2020-10-28 17:43:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:43:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:43:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:43:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,600 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:43:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:40,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:40,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:43:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:40,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:43:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:40,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:43:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:43:40,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:40,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:43:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:43:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:40,860 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 17:43:40,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186993001] [2020-10-28 17:43:40,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:40,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:43:40,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177972818] [2020-10-28 17:43:40,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:43:40,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:40,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:43:40,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:43:40,863 INFO L87 Difference]: Start difference. First operand 1176 states and 1630 transitions. Second operand 8 states. [2020-10-28 17:43:41,628 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:43:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:42,386 INFO L93 Difference]: Finished difference Result 3358 states and 4702 transitions. [2020-10-28 17:43:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:43:42,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-28 17:43:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:42,405 INFO L225 Difference]: With dead ends: 3358 [2020-10-28 17:43:42,405 INFO L226 Difference]: Without dead ends: 2223 [2020-10-28 17:43:42,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:43:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-10-28 17:43:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2166. [2020-10-28 17:43:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2166 states. [2020-10-28 17:43:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 2997 transitions. [2020-10-28 17:43:42,618 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 2997 transitions. Word has length 85 [2020-10-28 17:43:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:42,618 INFO L481 AbstractCegarLoop]: Abstraction has 2166 states and 2997 transitions. [2020-10-28 17:43:42,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:43:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 2997 transitions. [2020-10-28 17:43:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:43:42,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:42,621 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] [2020-10-28 17:43:42,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:43:42,622 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2082425637, now seen corresponding path program 1 times [2020-10-28 17:43:42,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:42,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348910515] [2020-10-28 17:43:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:47,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:43:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 17:43:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:47,893 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:47,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:47,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:47,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:47,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:43:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:43:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:43:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:48,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:48,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:48,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:48,203 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 17:43:48,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348910515] [2020-10-28 17:43:48,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:48,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:43:48,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723074113] [2020-10-28 17:43:48,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:43:48,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:48,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:43:48,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:43:48,205 INFO L87 Difference]: Start difference. First operand 2166 states and 2997 transitions. Second operand 10 states. [2020-10-28 17:43:48,419 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:43:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:50,350 INFO L93 Difference]: Finished difference Result 6188 states and 8625 transitions. [2020-10-28 17:43:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:43:50,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-28 17:43:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:50,383 INFO L225 Difference]: With dead ends: 6188 [2020-10-28 17:43:50,383 INFO L226 Difference]: Without dead ends: 4063 [2020-10-28 17:43:50,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:43:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2020-10-28 17:43:50,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4024. [2020-10-28 17:43:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4024 states. [2020-10-28 17:43:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 5523 transitions. [2020-10-28 17:43:50,814 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 5523 transitions. Word has length 85 [2020-10-28 17:43:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:50,815 INFO L481 AbstractCegarLoop]: Abstraction has 4024 states and 5523 transitions. [2020-10-28 17:43:50,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:43:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 5523 transitions. [2020-10-28 17:43:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:43:50,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:50,817 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] [2020-10-28 17:43:50,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:43:50,818 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash -142994693, now seen corresponding path program 1 times [2020-10-28 17:43:50,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:50,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012089917] [2020-10-28 17:43:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:55,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:55,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:43:55,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:43:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,039 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:43:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:56,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:56,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:43:56,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:43:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:43:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:43:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:56,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:56,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:56,307 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 17:43:56,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012089917] [2020-10-28 17:43:56,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:56,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:43:56,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407445066] [2020-10-28 17:43:56,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:43:56,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:43:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:43:56,310 INFO L87 Difference]: Start difference. First operand 4024 states and 5523 transitions. Second operand 10 states. [2020-10-28 17:43:56,501 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:43:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:58,574 INFO L93 Difference]: Finished difference Result 11558 states and 15935 transitions. [2020-10-28 17:43:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:43:58,575 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-28 17:43:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:58,630 INFO L225 Difference]: With dead ends: 11558 [2020-10-28 17:43:58,630 INFO L226 Difference]: Without dead ends: 7575 [2020-10-28 17:43:58,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:43:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2020-10-28 17:43:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 7500. [2020-10-28 17:43:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7500 states. [2020-10-28 17:43:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 10163 transitions. [2020-10-28 17:43:59,450 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 10163 transitions. Word has length 85 [2020-10-28 17:43:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:59,452 INFO L481 AbstractCegarLoop]: Abstraction has 7500 states and 10163 transitions. [2020-10-28 17:43:59,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:43:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 10163 transitions. [2020-10-28 17:43:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:43:59,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:59,453 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] [2020-10-28 17:43:59,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:43:59,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:59,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1204346472, now seen corresponding path program 1 times [2020-10-28 17:43:59,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:59,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990814426] [2020-10-28 17:43:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 17:43:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 17:43:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,046 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:00,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:00,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:44:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:44:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:44:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:44:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,326 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 17:44:00,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990814426] [2020-10-28 17:44:00,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:44:00,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:44:00,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956758086] [2020-10-28 17:44:00,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:44:00,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:44:00,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:44:00,331 INFO L87 Difference]: Start difference. First operand 7500 states and 10163 transitions. Second operand 10 states. [2020-10-28 17:44:00,543 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:01,869 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:44:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:03,745 INFO L93 Difference]: Finished difference Result 18141 states and 24717 transitions. [2020-10-28 17:44:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:44:03,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 17:44:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:03,833 INFO L225 Difference]: With dead ends: 18141 [2020-10-28 17:44:03,834 INFO L226 Difference]: Without dead ends: 10682 [2020-10-28 17:44:03,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:44:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10682 states. [2020-10-28 17:44:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10682 to 10404. [2020-10-28 17:44:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10404 states. [2020-10-28 17:44:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 13983 transitions. [2020-10-28 17:44:04,913 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 13983 transitions. Word has length 86 [2020-10-28 17:44:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:04,913 INFO L481 AbstractCegarLoop]: Abstraction has 10404 states and 13983 transitions. [2020-10-28 17:44:04,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:44:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 13983 transitions. [2020-10-28 17:44:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:44:04,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:04,915 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] [2020-10-28 17:44:04,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:44:04,916 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1673780233, now seen corresponding path program 1 times [2020-10-28 17:44:04,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:04,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449529151] [2020-10-28 17:44:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 17:44:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-28 17:44:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 17:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,565 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:05,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:44:05,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:05,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:05,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:05,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:05,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:05,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:05,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:05,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:05,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:44:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:05,835 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 17:44:05,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449529151] [2020-10-28 17:44:05,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:44:05,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:44:05,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928573767] [2020-10-28 17:44:05,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:44:05,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:44:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:44:05,838 INFO L87 Difference]: Start difference. First operand 10404 states and 13983 transitions. Second operand 13 states. [2020-10-28 17:44:06,772 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:44:06,941 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:44:07,236 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:07,442 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-28 17:44:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:08,466 INFO L93 Difference]: Finished difference Result 11990 states and 16763 transitions. [2020-10-28 17:44:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:44:08,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-28 17:44:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:08,539 INFO L225 Difference]: With dead ends: 11990 [2020-10-28 17:44:08,539 INFO L226 Difference]: Without dead ends: 11987 [2020-10-28 17:44:08,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:44:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11987 states. [2020-10-28 17:44:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11987 to 11052. [2020-10-28 17:44:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11052 states. [2020-10-28 17:44:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11052 states to 11052 states and 14647 transitions. [2020-10-28 17:44:09,675 INFO L78 Accepts]: Start accepts. Automaton has 11052 states and 14647 transitions. Word has length 86 [2020-10-28 17:44:09,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:09,676 INFO L481 AbstractCegarLoop]: Abstraction has 11052 states and 14647 transitions. [2020-10-28 17:44:09,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:44:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11052 states and 14647 transitions. [2020-10-28 17:44:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 17:44:09,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:09,677 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] [2020-10-28 17:44:09,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:44:09,678 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1854051586, now seen corresponding path program 1 times [2020-10-28 17:44:09,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:09,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412232665] [2020-10-28 17:44:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:09,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:10,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 17:44:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:44:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:44:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:44:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 17:44:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,942 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:14,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:44:14,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:44:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:44:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:44:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:44:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:44:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:44:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:15,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:15,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:44:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:15,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:15,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:15,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:15,248 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 17:44:15,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412232665] [2020-10-28 17:44:15,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:44:15,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:44:15,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185637914] [2020-10-28 17:44:15,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:44:15,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:15,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:44:15,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:44:15,250 INFO L87 Difference]: Start difference. First operand 11052 states and 14647 transitions. Second operand 10 states. [2020-10-28 17:44:15,464 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:16,276 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-28 17:44:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:17,818 INFO L93 Difference]: Finished difference Result 23539 states and 31304 transitions. [2020-10-28 17:44:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:44:17,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-28 17:44:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:17,882 INFO L225 Difference]: With dead ends: 23539 [2020-10-28 17:44:17,883 INFO L226 Difference]: Without dead ends: 15431 [2020-10-28 17:44:17,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:44:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2020-10-28 17:44:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 15356. [2020-10-28 17:44:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15356 states. [2020-10-28 17:44:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 20096 transitions. [2020-10-28 17:44:19,057 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 20096 transitions. Word has length 87 [2020-10-28 17:44:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:19,058 INFO L481 AbstractCegarLoop]: Abstraction has 15356 states and 20096 transitions. [2020-10-28 17:44:19,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:44:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 20096 transitions. [2020-10-28 17:44:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 17:44:19,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:19,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:19,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:44:19,066 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash 183880190, now seen corresponding path program 1 times [2020-10-28 17:44:19,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:19,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675778235] [2020-10-28 17:44:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:44:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,323 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:24,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:44:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:44:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:24,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:44:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:44:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 17:44:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 17:44:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:44:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 17:44:24,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675778235] [2020-10-28 17:44:24,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:24,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:44:24,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324641212] [2020-10-28 17:44:24,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:44:24,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:24,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:44:24,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:44:24,690 INFO L87 Difference]: Start difference. First operand 15356 states and 20096 transitions. Second operand 10 states. [2020-10-28 17:44:24,938 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:44:25,425 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:44:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:27,340 INFO L93 Difference]: Finished difference Result 30742 states and 40220 transitions. [2020-10-28 17:44:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:44:27,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-10-28 17:44:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:27,405 INFO L225 Difference]: With dead ends: 30742 [2020-10-28 17:44:27,405 INFO L226 Difference]: Without dead ends: 15431 [2020-10-28 17:44:27,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:44:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2020-10-28 17:44:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 15356. [2020-10-28 17:44:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15356 states. [2020-10-28 17:44:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 19824 transitions. [2020-10-28 17:44:28,707 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 19824 transitions. Word has length 130 [2020-10-28 17:44:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:28,708 INFO L481 AbstractCegarLoop]: Abstraction has 15356 states and 19824 transitions. [2020-10-28 17:44:28,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:44:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 19824 transitions. [2020-10-28 17:44:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 17:44:28,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:28,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:28,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:44:28,713 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash -671538530, now seen corresponding path program 1 times [2020-10-28 17:44:28,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:28,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927032366] [2020-10-28 17:44:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 17:44:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:44:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:33,938 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:33,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:33,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:33,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:33,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:33,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:44:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:34,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:34,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:34,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:34,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:44:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:44:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:44:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:44:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:34,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 17:44:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:34,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 17:44:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:44:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 17:44:34,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927032366] [2020-10-28 17:44:34,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:34,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:44:34,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200242490] [2020-10-28 17:44:34,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:44:34,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:44:34,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:44:34,281 INFO L87 Difference]: Start difference. First operand 15356 states and 19824 transitions. Second operand 10 states. [2020-10-28 17:44:34,523 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:44:34,911 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:44:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:36,472 INFO L93 Difference]: Finished difference Result 21090 states and 27181 transitions. [2020-10-28 17:44:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:44:36,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-10-28 17:44:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:36,489 INFO L225 Difference]: With dead ends: 21090 [2020-10-28 17:44:36,490 INFO L226 Difference]: Without dead ends: 5779 [2020-10-28 17:44:36,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:44:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2020-10-28 17:44:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5302. [2020-10-28 17:44:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5302 states. [2020-10-28 17:44:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 6677 transitions. [2020-10-28 17:44:36,985 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 6677 transitions. Word has length 130 [2020-10-28 17:44:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:36,986 INFO L481 AbstractCegarLoop]: Abstraction has 5302 states and 6677 transitions. [2020-10-28 17:44:36,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:44:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 6677 transitions. [2020-10-28 17:44:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:44:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:36,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:36,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:44:36,991 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1806473367, now seen corresponding path program 1 times [2020-10-28 17:44:36,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:36,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940612712] [2020-10-28 17:44:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:44:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 17:44:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,283 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:42,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:44:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:44:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:44:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:44:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:44:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:44:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 17:44:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:44:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:44:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:42,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:44:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:44:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940612712] [2020-10-28 17:44:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:42,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:44:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420213334] [2020-10-28 17:44:42,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:44:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:44:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:44:42,699 INFO L87 Difference]: Start difference. First operand 5302 states and 6677 transitions. Second operand 17 states. [2020-10-28 17:44:43,175 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:44:43,417 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:44,368 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:44:44,612 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-28 17:44:44,762 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-28 17:44:45,229 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:44:45,372 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:45,526 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:45,846 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:46,027 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:46,402 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:46,579 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:47,045 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:44:47,855 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-28 17:44:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:49,926 INFO L93 Difference]: Finished difference Result 14181 states and 18522 transitions. [2020-10-28 17:44:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 17:44:49,927 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2020-10-28 17:44:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:49,963 INFO L225 Difference]: With dead ends: 14181 [2020-10-28 17:44:49,963 INFO L226 Difference]: Without dead ends: 8970 [2020-10-28 17:44:49,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=661, Invalid=2095, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 17:44:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2020-10-28 17:44:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 8649. [2020-10-28 17:44:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8649 states. [2020-10-28 17:44:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8649 states to 8649 states and 11158 transitions. [2020-10-28 17:44:50,780 INFO L78 Accepts]: Start accepts. Automaton has 8649 states and 11158 transitions. Word has length 132 [2020-10-28 17:44:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:50,781 INFO L481 AbstractCegarLoop]: Abstraction has 8649 states and 11158 transitions. [2020-10-28 17:44:50,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:44:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8649 states and 11158 transitions. [2020-10-28 17:44:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:44:50,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:50,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:50,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:44:50,785 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:50,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1618763709, now seen corresponding path program 1 times [2020-10-28 17:44:50,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:50,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201613886] [2020-10-28 17:44:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:55,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:44:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:44:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 17:44:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,033 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:44:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:44:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:44:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:56,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:56,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:44:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:44:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:44:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:44:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:44:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:44:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:44:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:56,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:44:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 17:44:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:44:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:56,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:44:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:44:56,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201613886] [2020-10-28 17:44:56,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:56,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:44:56,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690202324] [2020-10-28 17:44:56,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:44:56,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:56,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:44:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:44:56,510 INFO L87 Difference]: Start difference. First operand 8649 states and 11158 transitions. Second operand 17 states. [2020-10-28 17:44:56,978 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:44:57,239 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:58,191 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:44:58,684 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:58,846 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-28 17:44:59,360 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:44:59,490 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:44:59,657 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:45:00,006 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:45:00,177 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:45:00,633 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:45:01,997 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:45:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:03,854 INFO L93 Difference]: Finished difference Result 15075 states and 19580 transitions. [2020-10-28 17:45:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 17:45:03,855 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2020-10-28 17:45:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:03,890 INFO L225 Difference]: With dead ends: 15075 [2020-10-28 17:45:03,891 INFO L226 Difference]: Without dead ends: 10630 [2020-10-28 17:45:03,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=661, Invalid=2095, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 17:45:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2020-10-28 17:45:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 9969. [2020-10-28 17:45:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9969 states. [2020-10-28 17:45:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 12862 transitions. [2020-10-28 17:45:04,817 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 12862 transitions. Word has length 132 [2020-10-28 17:45:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:04,818 INFO L481 AbstractCegarLoop]: Abstraction has 9969 states and 12862 transitions. [2020-10-28 17:45:04,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:45:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 12862 transitions. [2020-10-28 17:45:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:45:04,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:04,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:04,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:45:04,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash -781413799, now seen corresponding path program 1 times [2020-10-28 17:45:04,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:04,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10764016] [2020-10-28 17:45:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:04,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:05,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 17:45:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,071 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:45:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:45:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:45:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:45:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:45:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:45:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:45:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:45:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:45:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:45:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:10,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 17:45:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:45:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:45:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:45:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:45:10,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10764016] [2020-10-28 17:45:10,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:10,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:45:10,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375177745] [2020-10-28 17:45:10,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:45:10,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:45:10,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:45:10,465 INFO L87 Difference]: Start difference. First operand 9969 states and 12862 transitions. Second operand 17 states. [2020-10-28 17:45:10,914 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-28 17:45:11,291 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:45:12,158 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:45:12,677 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-28 17:45:12,971 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-28 17:45:14,001 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-28 17:45:14,209 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:45:14,418 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:45:14,661 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:45:14,853 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:45:15,058 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-28 17:45:15,344 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:45:16,707 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-28 17:45:17,696 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 17:45:18,646 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 17:45:19,249 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-28 17:45:20,177 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 17:45:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:23,347 INFO L93 Difference]: Finished difference Result 32776 states and 42470 transitions. [2020-10-28 17:45:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-28 17:45:23,348 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2020-10-28 17:45:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:23,422 INFO L225 Difference]: With dead ends: 32776 [2020-10-28 17:45:23,423 INFO L226 Difference]: Without dead ends: 22898 [2020-10-28 17:45:23,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1243, Invalid=5563, Unknown=0, NotChecked=0, Total=6806 [2020-10-28 17:45:23,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22898 states. [2020-10-28 17:45:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22898 to 21981. [2020-10-28 17:45:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21981 states. [2020-10-28 17:45:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21981 states to 21981 states and 28279 transitions. [2020-10-28 17:45:25,623 INFO L78 Accepts]: Start accepts. Automaton has 21981 states and 28279 transitions. Word has length 132 [2020-10-28 17:45:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:25,624 INFO L481 AbstractCegarLoop]: Abstraction has 21981 states and 28279 transitions. [2020-10-28 17:45:25,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:45:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 21981 states and 28279 transitions. [2020-10-28 17:45:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:45:25,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:25,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:25,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:45:25,628 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash 666089015, now seen corresponding path program 1 times [2020-10-28 17:45:25,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:25,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935775164] [2020-10-28 17:45:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:45:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,861 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:45:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:45:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:30,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:45:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:30,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:30,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:45:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:45:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:45:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:45:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:31,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:45:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:45:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:45:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:45:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:31,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:31,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:31,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:45:31,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935775164] [2020-10-28 17:45:31,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:31,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:45:31,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528648139] [2020-10-28 17:45:31,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:45:31,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:31,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:45:31,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:45:31,170 INFO L87 Difference]: Start difference. First operand 21981 states and 28279 transitions. Second operand 10 states. [2020-10-28 17:45:31,480 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:45:32,151 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:45:32,738 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-28 17:45:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:33,956 INFO L93 Difference]: Finished difference Result 32913 states and 42227 transitions. [2020-10-28 17:45:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:45:33,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-10-28 17:45:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:33,996 INFO L225 Difference]: With dead ends: 32913 [2020-10-28 17:45:33,996 INFO L226 Difference]: Without dead ends: 11023 [2020-10-28 17:45:34,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:45:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11023 states. [2020-10-28 17:45:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11023 to 10952. [2020-10-28 17:45:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10952 states. [2020-10-28 17:45:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10952 states to 10952 states and 13803 transitions. [2020-10-28 17:45:35,013 INFO L78 Accepts]: Start accepts. Automaton has 10952 states and 13803 transitions. Word has length 132 [2020-10-28 17:45:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:35,013 INFO L481 AbstractCegarLoop]: Abstraction has 10952 states and 13803 transitions. [2020-10-28 17:45:35,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:45:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10952 states and 13803 transitions. [2020-10-28 17:45:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:45:35,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:35,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:35,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:45:35,017 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:35,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1450693395, now seen corresponding path program 1 times [2020-10-28 17:45:35,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:35,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451823569] [2020-10-28 17:45:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:35,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:45:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 17:45:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,256 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:45:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:40,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:45:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:45:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,577 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-28 17:45:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:45:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:40,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:45:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:45:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:45:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:45:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:40,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:45:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:45:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:45:40,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451823569] [2020-10-28 17:45:40,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:40,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:45:40,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884019738] [2020-10-28 17:45:40,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:45:40,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:45:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:45:40,819 INFO L87 Difference]: Start difference. First operand 10952 states and 13803 transitions. Second operand 16 states. [2020-10-28 17:45:41,084 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-28 17:45:41,579 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:45:42,446 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2020-10-28 17:45:42,893 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-28 17:45:43,406 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-28 17:45:44,750 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 151 [2020-10-28 17:45:45,270 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:45:47,067 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 17:45:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:49,523 INFO L93 Difference]: Finished difference Result 43560 states and 54819 transitions. [2020-10-28 17:45:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-28 17:45:49,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 132 [2020-10-28 17:45:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:49,665 INFO L225 Difference]: With dead ends: 43560 [2020-10-28 17:45:49,665 INFO L226 Difference]: Without dead ends: 32699 [2020-10-28 17:45:49,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=559, Invalid=2303, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 17:45:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32699 states. [2020-10-28 17:45:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32699 to 29659. [2020-10-28 17:45:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29659 states. [2020-10-28 17:45:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29659 states to 29659 states and 37541 transitions. [2020-10-28 17:45:52,302 INFO L78 Accepts]: Start accepts. Automaton has 29659 states and 37541 transitions. Word has length 132 [2020-10-28 17:45:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:52,302 INFO L481 AbstractCegarLoop]: Abstraction has 29659 states and 37541 transitions. [2020-10-28 17:45:52,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:45:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29659 states and 37541 transitions. [2020-10-28 17:45:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:45:52,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:52,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:52,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:45:52,311 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:52,311 INFO L82 PathProgramCache]: Analyzing trace with hash 933231343, now seen corresponding path program 1 times [2020-10-28 17:45:52,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:52,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87370958] [2020-10-28 17:45:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:45:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:45:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,559 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:45:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:45:57,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:45:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:45:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:45:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:45:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:45:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:45:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:45:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:45:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:57,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:45:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:45:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 17:45:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:45:57,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87370958] [2020-10-28 17:45:57,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:57,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:45:57,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494954126] [2020-10-28 17:45:57,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:45:57,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:45:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:45:57,889 INFO L87 Difference]: Start difference. First operand 29659 states and 37541 transitions. Second operand 14 states. [2020-10-28 17:45:58,142 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 17:45:58,427 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:45:58,792 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:45:59,246 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:45:59,609 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2020-10-28 17:46:00,206 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 129 [2020-10-28 17:46:01,301 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 17:46:01,695 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 17:46:01,934 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-28 17:46:02,477 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 17:46:02,798 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:46:03,095 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 17:46:05,160 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:46:05,362 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:46:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:08,873 INFO L93 Difference]: Finished difference Result 70822 states and 89075 transitions. [2020-10-28 17:46:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-28 17:46:08,873 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 17:46:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:09,018 INFO L225 Difference]: With dead ends: 70822 [2020-10-28 17:46:09,019 INFO L226 Difference]: Without dead ends: 41153 [2020-10-28 17:46:09,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=584, Invalid=3076, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 17:46:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41153 states. [2020-10-28 17:46:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41153 to 38482. [2020-10-28 17:46:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38482 states. [2020-10-28 17:46:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38482 states to 38482 states and 47745 transitions. [2020-10-28 17:46:12,946 INFO L78 Accepts]: Start accepts. Automaton has 38482 states and 47745 transitions. Word has length 132 [2020-10-28 17:46:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:12,946 INFO L481 AbstractCegarLoop]: Abstraction has 38482 states and 47745 transitions. [2020-10-28 17:46:12,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:46:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 38482 states and 47745 transitions. [2020-10-28 17:46:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 17:46:12,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:12,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:12,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:46:12,955 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash -226315026, now seen corresponding path program 1 times [2020-10-28 17:46:12,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:12,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020233469] [2020-10-28 17:46:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:17,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:17,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 17:46:17,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:46:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:46:17,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:17,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:46:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:46:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 17:46:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,199 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:46:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:46:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:46:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:46:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:46:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:46:18,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:46:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:46:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:46:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:46:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:18,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:46:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:18,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:46:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:46:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:46:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:46:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:46:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:46:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:46:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:46:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:46:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:46:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:46:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:46:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:46:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:46:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:46:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 17:46:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:46:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:46:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:46:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:46:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:18,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:46:18,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:46:18,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:46:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:46:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:46:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:46:18,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020233469] [2020-10-28 17:46:18,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:46:18,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:46:18,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548076628] [2020-10-28 17:46:18,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:46:18,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:46:18,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:46:18,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:46:18,601 INFO L87 Difference]: Start difference. First operand 38482 states and 47745 transitions. Second operand 17 states. [2020-10-28 17:46:19,031 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:46:19,329 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:46:20,267 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:46:20,490 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-28 17:46:20,774 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:21,090 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:21,300 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:21,546 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:21,949 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-28 17:46:22,130 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:22,634 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-28 17:46:23,640 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-28 17:46:24,198 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 17:46:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:46:28,302 INFO L93 Difference]: Finished difference Result 64027 states and 80106 transitions. [2020-10-28 17:46:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 17:46:28,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-28 17:46:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:46:28,425 INFO L225 Difference]: With dead ends: 64027 [2020-10-28 17:46:28,425 INFO L226 Difference]: Without dead ends: 43844 [2020-10-28 17:46:28,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=604, Invalid=1846, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 17:46:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43844 states. [2020-10-28 17:46:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43844 to 41684. [2020-10-28 17:46:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41684 states. [2020-10-28 17:46:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41684 states to 41684 states and 51751 transitions. [2020-10-28 17:46:32,522 INFO L78 Accepts]: Start accepts. Automaton has 41684 states and 51751 transitions. Word has length 133 [2020-10-28 17:46:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:46:32,522 INFO L481 AbstractCegarLoop]: Abstraction has 41684 states and 51751 transitions. [2020-10-28 17:46:32,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:46:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 41684 states and 51751 transitions. [2020-10-28 17:46:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 17:46:32,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:46:32,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:32,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:46:32,527 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:46:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:46:32,528 INFO L82 PathProgramCache]: Analyzing trace with hash -995398750, now seen corresponding path program 1 times [2020-10-28 17:46:32,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:46:32,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079954865] [2020-10-28 17:46:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:46:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:46:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:32,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:46:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking...