/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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:55:31,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:55:31,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:55:31,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:55:31,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:55:31,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:55:31,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:55:31,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:55:31,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:55:31,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:55:31,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:55:31,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:55:31,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:55:31,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:55:31,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:55:31,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:55:31,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:55:31,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:55:31,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:55:31,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:55:31,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:55:31,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:55:31,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:55:31,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:55:31,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:55:31,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:55:31,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:55:31,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:55:31,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:55:31,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:55:31,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:55:31,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:55:31,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:55:31,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:55:31,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:55:31,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:55:31,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:55:31,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:55:31,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:55:31,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:55:31,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:55:31,823 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 18:55:31,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:55:31,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:55:31,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:55:31,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:55:31,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:55:31,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:55:31,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:55:31,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:55:31,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:55:31,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:55:31,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:55:31,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:55:31,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:55:31,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:55:31,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:55:31,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:55:31,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:55:31,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:55:31,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:55:31,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:55:31,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:55:31,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:55:31,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:55:31,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:55:31,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:55:31,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:55:31,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:55:31,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:55:31,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:55:31,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:55:32,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:55:32,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:55:32,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:55:32,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:55:32,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:55:32,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 18:55:32,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d656a67/900fb5ab181f4115bf7413c3a8614a3f/FLAG883962f5e [2020-10-28 18:55:33,274 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:55:33,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 18:55:33,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d656a67/900fb5ab181f4115bf7413c3a8614a3f/FLAG883962f5e [2020-10-28 18:55:33,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d656a67/900fb5ab181f4115bf7413c3a8614a3f [2020-10-28 18:55:33,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:55:33,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:55:33,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:55:33,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:55:33,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:55:33,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:55:33" (1/1) ... [2020-10-28 18:55:33,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4c8bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:33, skipping insertion in model container [2020-10-28 18:55:33,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:55:33" (1/1) ... [2020-10-28 18:55:33,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:55:33,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:55:34,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:55:34,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:55:34,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:55:34,665 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:55:34,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34 WrapperNode [2020-10-28 18:55:34,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:55:34,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:55:34,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:55:34,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:55:34,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (1/1) ... [2020-10-28 18:55:34,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:55:34,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:55:34,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:55:34,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:55:34,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (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 18:55:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:55:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:55:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:55:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:55:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:55:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:55:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:55:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:55:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:55:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:55:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:55:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:55:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:55:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:55:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:55:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:55:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:55:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:55:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:55:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:55:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:55:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:55:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:55:36,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:55:36,358 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:55:36,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:55:36 BoogieIcfgContainer [2020-10-28 18:55:36,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:55:36,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:55:36,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:55:36,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:55:36,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:55:33" (1/3) ... [2020-10-28 18:55:36,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636523f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:55:36, skipping insertion in model container [2020-10-28 18:55:36,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:55:34" (2/3) ... [2020-10-28 18:55:36,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636523f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:55:36, skipping insertion in model container [2020-10-28 18:55:36,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:55:36" (3/3) ... [2020-10-28 18:55:36,370 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 18:55:36,383 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:55:36,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:55:36,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:55:36,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:55:36,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:55:36,436 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:55:36,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:55:36,436 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:55:36,436 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:55:36,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:55:36,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:55:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states. [2020-10-28 18:55:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 18:55:36,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:36,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:55:36,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash -502581709, now seen corresponding path program 1 times [2020-10-28 18:55:36,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:36,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769490573] [2020-10-28 18:55:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 18:55:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:55:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 18:55:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:41,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:55:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 18:55:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 18:55:42,268 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:55:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:42,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:42,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:55:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:42,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:42,363 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 18:55:42,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769490573] [2020-10-28 18:55:42,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:42,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:55:42,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779583260] [2020-10-28 18:55:42,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:55:42,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:55:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:55:42,395 INFO L87 Difference]: Start difference. First operand 433 states. Second operand 4 states. [2020-10-28 18:55:42,736 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:55:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:45,423 INFO L93 Difference]: Finished difference Result 1100 states and 1774 transitions. [2020-10-28 18:55:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:55:45,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-28 18:55:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:45,447 INFO L225 Difference]: With dead ends: 1100 [2020-10-28 18:55:45,447 INFO L226 Difference]: Without dead ends: 782 [2020-10-28 18:55:45,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:55:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-10-28 18:55:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 735. [2020-10-28 18:55:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-28 18:55:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1175 transitions. [2020-10-28 18:55:45,570 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1175 transitions. Word has length 112 [2020-10-28 18:55:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:45,571 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 1175 transitions. [2020-10-28 18:55:45,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:55:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1175 transitions. [2020-10-28 18:55:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:55:45,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:45,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:55:45,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:55:45,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:45,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2048043125, now seen corresponding path program 1 times [2020-10-28 18:55:45,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:45,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705318491] [2020-10-28 18:55:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:45,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:46,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:50,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:55:50,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:55:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 18:55:50,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:50,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:55:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 18:55:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:50,962 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:55:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:50,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:50,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:55:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:50,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:51,044 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 18:55:51,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705318491] [2020-10-28 18:55:51,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:51,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:55:51,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78816945] [2020-10-28 18:55:51,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:55:51,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:55:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:55:51,061 INFO L87 Difference]: Start difference. First operand 735 states and 1175 transitions. Second operand 4 states. [2020-10-28 18:55:51,352 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:55:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:53,493 INFO L93 Difference]: Finished difference Result 1719 states and 2730 transitions. [2020-10-28 18:55:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:55:53,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-28 18:55:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:53,502 INFO L225 Difference]: With dead ends: 1719 [2020-10-28 18:55:53,503 INFO L226 Difference]: Without dead ends: 1272 [2020-10-28 18:55:53,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:55:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-10-28 18:55:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1181. [2020-10-28 18:55:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-10-28 18:55:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1873 transitions. [2020-10-28 18:55:53,601 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1873 transitions. Word has length 114 [2020-10-28 18:55:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:53,603 INFO L481 AbstractCegarLoop]: Abstraction has 1181 states and 1873 transitions. [2020-10-28 18:55:53,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:55:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1873 transitions. [2020-10-28 18:55:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 18:55:53,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:53,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:55:53,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:55:53,630 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1280774499, now seen corresponding path program 1 times [2020-10-28 18:55:53,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:53,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559747096] [2020-10-28 18:55:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:58,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:58,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 18:55:58,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:55:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:55:58,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:58,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 18:55:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 18:55:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:59,084 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:55:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:59,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:59,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:59,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:55:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:59,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:59,152 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 18:55:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559747096] [2020-10-28 18:55:59,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:59,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:55:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393739525] [2020-10-28 18:55:59,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:55:59,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:59,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:55:59,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:55:59,155 INFO L87 Difference]: Start difference. First operand 1181 states and 1873 transitions. Second operand 4 states. [2020-10-28 18:55:59,501 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:56:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:01,656 INFO L93 Difference]: Finished difference Result 2995 states and 4721 transitions. [2020-10-28 18:56:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:01,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-28 18:56:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:01,670 INFO L225 Difference]: With dead ends: 2995 [2020-10-28 18:56:01,671 INFO L226 Difference]: Without dead ends: 2160 [2020-10-28 18:56:01,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2020-10-28 18:56:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 1981. [2020-10-28 18:56:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-28 18:56:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3111 transitions. [2020-10-28 18:56:01,786 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3111 transitions. Word has length 116 [2020-10-28 18:56:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:01,786 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3111 transitions. [2020-10-28 18:56:01,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3111 transitions. [2020-10-28 18:56:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 18:56:01,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:01,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:01,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:56:01,795 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1533984521, now seen corresponding path program 1 times [2020-10-28 18:56:01,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:01,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364202354] [2020-10-28 18:56:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:06,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 18:56:06,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:56:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:56:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:06,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 18:56:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 18:56:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:56:07,243 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:56:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:07,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:56:07,327 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 18:56:07,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364202354] [2020-10-28 18:56:07,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:07,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525587543] [2020-10-28 18:56:07,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:07,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:07,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:07,331 INFO L87 Difference]: Start difference. First operand 1981 states and 3111 transitions. Second operand 4 states. [2020-10-28 18:56:07,613 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 18:56:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:10,151 INFO L93 Difference]: Finished difference Result 5271 states and 8229 transitions. [2020-10-28 18:56:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:10,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-28 18:56:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:10,180 INFO L225 Difference]: With dead ends: 5271 [2020-10-28 18:56:10,180 INFO L226 Difference]: Without dead ends: 3716 [2020-10-28 18:56:10,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2020-10-28 18:56:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3361. [2020-10-28 18:56:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-10-28 18:56:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 5213 transitions. [2020-10-28 18:56:10,424 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 5213 transitions. Word has length 118 [2020-10-28 18:56:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:10,427 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 5213 transitions. [2020-10-28 18:56:10,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 5213 transitions. [2020-10-28 18:56:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 18:56:10,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:10,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:10,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:56:10,437 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:10,438 INFO L82 PathProgramCache]: Analyzing trace with hash 361720783, now seen corresponding path program 1 times [2020-10-28 18:56:10,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:10,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632163376] [2020-10-28 18:56:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:56:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:56:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 18:56:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:15,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:56:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 18:56:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:56:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:56:15,919 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:15,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:15,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:56:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:15,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:56:15,988 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 18:56:15,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632163376] [2020-10-28 18:56:15,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:15,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:56:15,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446357959] [2020-10-28 18:56:15,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:56:15,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:56:15,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:15,997 INFO L87 Difference]: Start difference. First operand 3361 states and 5213 transitions. Second operand 5 states. [2020-10-28 18:56:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:18,227 INFO L93 Difference]: Finished difference Result 5620 states and 8687 transitions. [2020-10-28 18:56:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:18,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-28 18:56:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:18,246 INFO L225 Difference]: With dead ends: 5620 [2020-10-28 18:56:18,247 INFO L226 Difference]: Without dead ends: 3361 [2020-10-28 18:56:18,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:56:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2020-10-28 18:56:18,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 3361. [2020-10-28 18:56:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-10-28 18:56:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 5181 transitions. [2020-10-28 18:56:18,467 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 5181 transitions. Word has length 120 [2020-10-28 18:56:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:18,468 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 5181 transitions. [2020-10-28 18:56:18,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:56:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 5181 transitions. [2020-10-28 18:56:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:56:18,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:18,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:18,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:56:18,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 679585902, now seen corresponding path program 1 times [2020-10-28 18:56:18,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:18,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684988540] [2020-10-28 18:56:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:23,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:56:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:56:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 18:56:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:23,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 18:56:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 18:56:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:56:23,820 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:23,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:56:23,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:23,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:23,890 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 18:56:23,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684988540] [2020-10-28 18:56:23,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:23,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:23,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302181748] [2020-10-28 18:56:23,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:23,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:23,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:23,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:23,894 INFO L87 Difference]: Start difference. First operand 3361 states and 5181 transitions. Second operand 4 states. [2020-10-28 18:56:24,174 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:56:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:26,714 INFO L93 Difference]: Finished difference Result 7424 states and 11359 transitions. [2020-10-28 18:56:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:26,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-28 18:56:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:26,745 INFO L225 Difference]: With dead ends: 7424 [2020-10-28 18:56:26,745 INFO L226 Difference]: Without dead ends: 5901 [2020-10-28 18:56:26,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2020-10-28 18:56:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 5194. [2020-10-28 18:56:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5194 states. [2020-10-28 18:56:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 7915 transitions. [2020-10-28 18:56:27,060 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 7915 transitions. Word has length 121 [2020-10-28 18:56:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:27,060 INFO L481 AbstractCegarLoop]: Abstraction has 5194 states and 7915 transitions. [2020-10-28 18:56:27,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 7915 transitions. [2020-10-28 18:56:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 18:56:27,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:27,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:27,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:56:27,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1813928525, now seen corresponding path program 1 times [2020-10-28 18:56:27,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:27,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079736547] [2020-10-28 18:56:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:29,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 18:56:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:56:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-10-28 18:56:29,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:29,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:56:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 18:56:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:29,630 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:29,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:29,692 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 18:56:29,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079736547] [2020-10-28 18:56:29,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:29,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:29,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109205018] [2020-10-28 18:56:29,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:29,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:29,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:29,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:29,695 INFO L87 Difference]: Start difference. First operand 5194 states and 7915 transitions. Second operand 4 states. [2020-10-28 18:56:32,721 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 18:56:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:32,727 INFO L93 Difference]: Finished difference Result 10771 states and 16363 transitions. [2020-10-28 18:56:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:32,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-28 18:56:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:32,765 INFO L225 Difference]: With dead ends: 10771 [2020-10-28 18:56:32,765 INFO L226 Difference]: Without dead ends: 6403 [2020-10-28 18:56:32,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2020-10-28 18:56:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6400. [2020-10-28 18:56:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2020-10-28 18:56:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 9664 transitions. [2020-10-28 18:56:33,232 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 9664 transitions. Word has length 124 [2020-10-28 18:56:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:33,232 INFO L481 AbstractCegarLoop]: Abstraction has 6400 states and 9664 transitions. [2020-10-28 18:56:33,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 9664 transitions. [2020-10-28 18:56:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 18:56:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:33,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:33,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:56:33,251 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1411764570, now seen corresponding path program 1 times [2020-10-28 18:56:33,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:33,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890754709] [2020-10-28 18:56:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 18:56:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:56:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:56:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:34,025 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:34,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:56:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:34,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:34,071 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 18:56:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890754709] [2020-10-28 18:56:34,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:34,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:56:34,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184293399] [2020-10-28 18:56:34,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:56:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:56:34,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:34,074 INFO L87 Difference]: Start difference. First operand 6400 states and 9664 transitions. Second operand 5 states. [2020-10-28 18:56:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:36,154 INFO L93 Difference]: Finished difference Result 12770 states and 19274 transitions. [2020-10-28 18:56:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:56:36,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-28 18:56:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:36,183 INFO L225 Difference]: With dead ends: 12770 [2020-10-28 18:56:36,183 INFO L226 Difference]: Without dead ends: 6400 [2020-10-28 18:56:36,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:56:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2020-10-28 18:56:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6400. [2020-10-28 18:56:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2020-10-28 18:56:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 9640 transitions. [2020-10-28 18:56:36,519 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 9640 transitions. Word has length 125 [2020-10-28 18:56:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:36,519 INFO L481 AbstractCegarLoop]: Abstraction has 6400 states and 9640 transitions. [2020-10-28 18:56:36,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:56:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 9640 transitions. [2020-10-28 18:56:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 18:56:36,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:36,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:36,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:56:36,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1976925248, now seen corresponding path program 1 times [2020-10-28 18:56:36,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:36,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143433290] [2020-10-28 18:56:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:37,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:41,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:41,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 18:56:41,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 18:56:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 18:56:41,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:41,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:56:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:56:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:56:41,900 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:41,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:41,949 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 18:56:41,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143433290] [2020-10-28 18:56:41,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:41,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:41,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066529893] [2020-10-28 18:56:41,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:41,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:41,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:41,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:41,951 INFO L87 Difference]: Start difference. First operand 6400 states and 9640 transitions. Second operand 4 states. [2020-10-28 18:56:42,269 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:56:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:44,475 INFO L93 Difference]: Finished difference Result 11788 states and 17785 transitions. [2020-10-28 18:56:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:44,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-28 18:56:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:44,493 INFO L225 Difference]: With dead ends: 11788 [2020-10-28 18:56:44,494 INFO L226 Difference]: Without dead ends: 6180 [2020-10-28 18:56:44,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2020-10-28 18:56:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 6177. [2020-10-28 18:56:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6177 states. [2020-10-28 18:56:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 9312 transitions. [2020-10-28 18:56:44,842 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 9312 transitions. Word has length 148 [2020-10-28 18:56:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:44,842 INFO L481 AbstractCegarLoop]: Abstraction has 6177 states and 9312 transitions. [2020-10-28 18:56:44,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 9312 transitions. [2020-10-28 18:56:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:56:44,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:44,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:44,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:56:44,857 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash 237509513, now seen corresponding path program 1 times [2020-10-28 18:56:44,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:44,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411687818] [2020-10-28 18:56:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 18:56:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 18:56:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:50,235 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:50,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:50,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:50,288 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 18:56:50,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411687818] [2020-10-28 18:56:50,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:50,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:50,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439771983] [2020-10-28 18:56:50,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:50,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:50,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:50,291 INFO L87 Difference]: Start difference. First operand 6177 states and 9312 transitions. Second operand 4 states. [2020-10-28 18:56:50,616 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:56:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:52,672 INFO L93 Difference]: Finished difference Result 10745 states and 16221 transitions. [2020-10-28 18:56:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:56:52,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 18:56:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:52,688 INFO L225 Difference]: With dead ends: 10745 [2020-10-28 18:56:52,688 INFO L226 Difference]: Without dead ends: 5744 [2020-10-28 18:56:52,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:56:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2020-10-28 18:56:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5741. [2020-10-28 18:56:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5741 states. [2020-10-28 18:56:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8657 transitions. [2020-10-28 18:56:53,015 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8657 transitions. Word has length 149 [2020-10-28 18:56:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:53,015 INFO L481 AbstractCegarLoop]: Abstraction has 5741 states and 8657 transitions. [2020-10-28 18:56:53,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:56:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8657 transitions. [2020-10-28 18:56:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 18:56:53,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:53,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:53,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:56:53,028 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:53,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:53,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1946619335, now seen corresponding path program 1 times [2020-10-28 18:56:53,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:53,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230695600] [2020-10-28 18:56:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:58,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 18:56:58,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-28 18:56:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:56:58,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:58,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 18:56:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 18:56:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:58,356 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:56:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:58,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:58,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:58,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:56:58,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:58,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:58,454 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 18:56:58,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230695600] [2020-10-28 18:56:58,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:58,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:56:58,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333598039] [2020-10-28 18:56:58,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:56:58,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:58,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:56:58,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:56:58,456 INFO L87 Difference]: Start difference. First operand 5741 states and 8657 transitions. Second operand 4 states. [2020-10-28 18:56:58,802 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:57:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:01,040 INFO L93 Difference]: Finished difference Result 10548 states and 15926 transitions. [2020-10-28 18:57:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:01,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-28 18:57:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:01,054 INFO L225 Difference]: With dead ends: 10548 [2020-10-28 18:57:01,054 INFO L226 Difference]: Without dead ends: 5524 [2020-10-28 18:57:01,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2020-10-28 18:57:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5521. [2020-10-28 18:57:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5521 states. [2020-10-28 18:57:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 8321 transitions. [2020-10-28 18:57:01,367 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 8321 transitions. Word has length 150 [2020-10-28 18:57:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:01,367 INFO L481 AbstractCegarLoop]: Abstraction has 5521 states and 8321 transitions. [2020-10-28 18:57:01,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 8321 transitions. [2020-10-28 18:57:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:57:01,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:01,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:01,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:57:01,379 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash -527710068, now seen corresponding path program 1 times [2020-10-28 18:57:01,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:01,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649497852] [2020-10-28 18:57:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:06,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 18:57:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:06,691 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:06,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:06,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:06,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:06,729 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 18:57:06,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649497852] [2020-10-28 18:57:06,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:06,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:06,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518926914] [2020-10-28 18:57:06,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:06,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:06,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:06,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:06,732 INFO L87 Difference]: Start difference. First operand 5521 states and 8321 transitions. Second operand 4 states. [2020-10-28 18:57:07,019 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:57:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:08,984 INFO L93 Difference]: Finished difference Result 10482 states and 15830 transitions. [2020-10-28 18:57:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:08,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-28 18:57:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:08,999 INFO L225 Difference]: With dead ends: 10482 [2020-10-28 18:57:08,999 INFO L226 Difference]: Without dead ends: 5441 [2020-10-28 18:57:09,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2020-10-28 18:57:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 5438. [2020-10-28 18:57:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5438 states. [2020-10-28 18:57:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 8196 transitions. [2020-10-28 18:57:09,332 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 8196 transitions. Word has length 151 [2020-10-28 18:57:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:09,332 INFO L481 AbstractCegarLoop]: Abstraction has 5438 states and 8196 transitions. [2020-10-28 18:57:09,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 8196 transitions. [2020-10-28 18:57:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:57:09,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:09,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:09,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:57:09,389 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:09,390 INFO L82 PathProgramCache]: Analyzing trace with hash -766875814, now seen corresponding path program 1 times [2020-10-28 18:57:09,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:09,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270476795] [2020-10-28 18:57:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:14,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:57:14,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:57:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:14,748 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:14,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:14,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:14,785 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 18:57:14,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270476795] [2020-10-28 18:57:14,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:14,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:14,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430846116] [2020-10-28 18:57:14,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:14,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:14,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:14,788 INFO L87 Difference]: Start difference. First operand 5438 states and 8196 transitions. Second operand 4 states. [2020-10-28 18:57:16,867 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:57:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:17,042 INFO L93 Difference]: Finished difference Result 8626 states and 13046 transitions. [2020-10-28 18:57:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:17,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:57:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:17,052 INFO L225 Difference]: With dead ends: 8626 [2020-10-28 18:57:17,052 INFO L226 Difference]: Without dead ends: 3668 [2020-10-28 18:57:17,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2020-10-28 18:57:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3665. [2020-10-28 18:57:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3665 states. [2020-10-28 18:57:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 5494 transitions. [2020-10-28 18:57:17,344 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 5494 transitions. Word has length 152 [2020-10-28 18:57:17,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:17,345 INFO L481 AbstractCegarLoop]: Abstraction has 3665 states and 5494 transitions. [2020-10-28 18:57:17,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 5494 transitions. [2020-10-28 18:57:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:57:17,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:17,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:17,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:57:17,355 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:17,356 INFO L82 PathProgramCache]: Analyzing trace with hash -61936398, now seen corresponding path program 1 times [2020-10-28 18:57:17,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:17,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058807640] [2020-10-28 18:57:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:22,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:22,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:57:22,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:57:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:57:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:22,732 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:22,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:22,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:22,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:57:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:22,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:22,774 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 18:57:22,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058807640] [2020-10-28 18:57:22,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:22,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988590880] [2020-10-28 18:57:22,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:22,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:22,776 INFO L87 Difference]: Start difference. First operand 3665 states and 5494 transitions. Second operand 4 states. [2020-10-28 18:57:24,632 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:57:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:24,730 INFO L93 Difference]: Finished difference Result 5193 states and 7801 transitions. [2020-10-28 18:57:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:24,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:57:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:24,734 INFO L225 Difference]: With dead ends: 5193 [2020-10-28 18:57:24,734 INFO L226 Difference]: Without dead ends: 1764 [2020-10-28 18:57:24,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2020-10-28 18:57:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1761. [2020-10-28 18:57:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-10-28 18:57:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2617 transitions. [2020-10-28 18:57:24,856 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2617 transitions. Word has length 152 [2020-10-28 18:57:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:24,857 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states and 2617 transitions. [2020-10-28 18:57:24,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2617 transitions. [2020-10-28 18:57:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:57:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:24,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:24,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:57:24,861 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash -740173000, now seen corresponding path program 1 times [2020-10-28 18:57:24,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:24,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819651549] [2020-10-28 18:57:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:57:29,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-28 18:57:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 18:57:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:30,278 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:30,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:30,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:30,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:57:30,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:30,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:30,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:30,315 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 18:57:30,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819651549] [2020-10-28 18:57:30,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:30,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:30,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128248147] [2020-10-28 18:57:30,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:30,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:30,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:30,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:30,317 INFO L87 Difference]: Start difference. First operand 1761 states and 2617 transitions. Second operand 4 states. [2020-10-28 18:57:31,830 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:57:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:32,041 INFO L93 Difference]: Finished difference Result 2422 states and 3612 transitions. [2020-10-28 18:57:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:32,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:57:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:32,043 INFO L225 Difference]: With dead ends: 2422 [2020-10-28 18:57:32,043 INFO L226 Difference]: Without dead ends: 934 [2020-10-28 18:57:32,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-10-28 18:57:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 931. [2020-10-28 18:57:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-10-28 18:57:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1365 transitions. [2020-10-28 18:57:32,091 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1365 transitions. Word has length 152 [2020-10-28 18:57:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:32,091 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1365 transitions. [2020-10-28 18:57:32,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1365 transitions. [2020-10-28 18:57:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:57:32,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:32,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:32,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:57:32,095 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash -724710492, now seen corresponding path program 1 times [2020-10-28 18:57:32,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:32,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988752701] [2020-10-28 18:57:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 18:57:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 18:57:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:37,462 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:37,509 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 18:57:37,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988752701] [2020-10-28 18:57:37,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:37,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:37,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274148521] [2020-10-28 18:57:37,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:37,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:37,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:37,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:37,511 INFO L87 Difference]: Start difference. First operand 931 states and 1365 transitions. Second operand 4 states. [2020-10-28 18:57:38,948 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:57:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:39,108 INFO L93 Difference]: Finished difference Result 1235 states and 1818 transitions. [2020-10-28 18:57:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:39,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:57:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:39,109 INFO L225 Difference]: With dead ends: 1235 [2020-10-28 18:57:39,110 INFO L226 Difference]: Without dead ends: 485 [2020-10-28 18:57:39,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-28 18:57:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 482. [2020-10-28 18:57:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-28 18:57:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 695 transitions. [2020-10-28 18:57:39,135 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 695 transitions. Word has length 152 [2020-10-28 18:57:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:39,136 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 695 transitions. [2020-10-28 18:57:39,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 695 transitions. [2020-10-28 18:57:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:57:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:39,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:39,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:57:39,137 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:39,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -436086930, now seen corresponding path program 1 times [2020-10-28 18:57:39,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:39,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120069118] [2020-10-28 18:57:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:44,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:57:44,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 18:57:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:44,563 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:44,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:44,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:57:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:44,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:44,695 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 18:57:44,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120069118] [2020-10-28 18:57:44,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:44,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:57:44,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459628178] [2020-10-28 18:57:44,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:57:44,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:57:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:57:44,697 INFO L87 Difference]: Start difference. First operand 482 states and 695 transitions. Second operand 7 states. [2020-10-28 18:57:48,189 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 18:57:48,483 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 18:57:48,771 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:57:49,071 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 18:57:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:49,490 INFO L93 Difference]: Finished difference Result 1844 states and 2645 transitions. [2020-10-28 18:57:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:57:49,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-28 18:57:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:49,493 INFO L225 Difference]: With dead ends: 1844 [2020-10-28 18:57:49,493 INFO L226 Difference]: Without dead ends: 1494 [2020-10-28 18:57:49,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:57:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-10-28 18:57:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1485. [2020-10-28 18:57:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-28 18:57:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2117 transitions. [2020-10-28 18:57:49,606 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2117 transitions. Word has length 152 [2020-10-28 18:57:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:49,606 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2117 transitions. [2020-10-28 18:57:49,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:57:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2117 transitions. [2020-10-28 18:57:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:57:49,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:49,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:49,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:57:49,610 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1572744448, now seen corresponding path program 1 times [2020-10-28 18:57:49,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:49,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119663064] [2020-10-28 18:57:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 18:57:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 18:57:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:54,960 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:57:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:57:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:54,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:57:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:55,035 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 18:57:55,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119663064] [2020-10-28 18:57:55,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:55,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:57:55,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292953749] [2020-10-28 18:57:55,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:57:55,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:57:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:57:55,037 INFO L87 Difference]: Start difference. First operand 1485 states and 2117 transitions. Second operand 4 states. [2020-10-28 18:57:57,273 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:57:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:57,547 INFO L93 Difference]: Finished difference Result 3321 states and 4737 transitions. [2020-10-28 18:57:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:57:57,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 18:57:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:57,551 INFO L225 Difference]: With dead ends: 3321 [2020-10-28 18:57:57,551 INFO L226 Difference]: Without dead ends: 2430 [2020-10-28 18:57:57,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:57:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-28 18:57:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2412. [2020-10-28 18:57:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2020-10-28 18:57:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3402 transitions. [2020-10-28 18:57:57,698 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3402 transitions. Word has length 156 [2020-10-28 18:57:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:57,698 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 3402 transitions. [2020-10-28 18:57:57,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:57:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3402 transitions. [2020-10-28 18:57:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:57:57,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:57,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:57,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:57:57,702 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:57,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1234175108, now seen corresponding path program 1 times [2020-10-28 18:57:57,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550776081] [2020-10-28 18:57:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:02,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:02,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:58:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:03,044 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:03,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:03,111 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 18:58:03,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550776081] [2020-10-28 18:58:03,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:03,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:58:03,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969900042] [2020-10-28 18:58:03,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:58:03,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:58:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:58:03,113 INFO L87 Difference]: Start difference. First operand 2412 states and 3402 transitions. Second operand 4 states. [2020-10-28 18:58:03,431 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:58:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:05,029 INFO L93 Difference]: Finished difference Result 4640 states and 6534 transitions. [2020-10-28 18:58:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:58:05,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 18:58:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:05,034 INFO L225 Difference]: With dead ends: 4640 [2020-10-28 18:58:05,034 INFO L226 Difference]: Without dead ends: 3381 [2020-10-28 18:58:05,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2020-10-28 18:58:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3153. [2020-10-28 18:58:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2020-10-28 18:58:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 4381 transitions. [2020-10-28 18:58:05,246 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 4381 transitions. Word has length 156 [2020-10-28 18:58:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:05,246 INFO L481 AbstractCegarLoop]: Abstraction has 3153 states and 4381 transitions. [2020-10-28 18:58:05,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:58:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 4381 transitions. [2020-10-28 18:58:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:58:05,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:05,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:05,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 18:58:05,252 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 447509582, now seen corresponding path program 1 times [2020-10-28 18:58:05,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:05,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914253920] [2020-10-28 18:58:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:58:10,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-28 18:58:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:58:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:10,714 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:10,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:10,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:10,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:10,795 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 18:58:10,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914253920] [2020-10-28 18:58:10,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:10,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:58:10,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47710331] [2020-10-28 18:58:10,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:58:10,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:10,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:58:10,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:58:10,797 INFO L87 Difference]: Start difference. First operand 3153 states and 4381 transitions. Second operand 4 states. [2020-10-28 18:58:11,094 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:58:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:12,749 INFO L93 Difference]: Finished difference Result 4718 states and 6522 transitions. [2020-10-28 18:58:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:58:12,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 18:58:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:12,760 INFO L225 Difference]: With dead ends: 4718 [2020-10-28 18:58:12,760 INFO L226 Difference]: Without dead ends: 3196 [2020-10-28 18:58:12,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2020-10-28 18:58:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3161. [2020-10-28 18:58:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-10-28 18:58:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4308 transitions. [2020-10-28 18:58:12,939 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4308 transitions. Word has length 156 [2020-10-28 18:58:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:12,939 INFO L481 AbstractCegarLoop]: Abstraction has 3161 states and 4308 transitions. [2020-10-28 18:58:12,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:58:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4308 transitions. [2020-10-28 18:58:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:58:12,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:12,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:12,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 18:58:12,944 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash 438064563, now seen corresponding path program 1 times [2020-10-28 18:58:12,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:12,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770247400] [2020-10-28 18:58:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:58:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:18,293 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:58:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:18,361 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 18:58:18,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770247400] [2020-10-28 18:58:18,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:18,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:58:18,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451960710] [2020-10-28 18:58:18,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:58:18,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:58:18,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:58:18,363 INFO L87 Difference]: Start difference. First operand 3161 states and 4308 transitions. Second operand 4 states. [2020-10-28 18:58:18,684 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 18:58:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:20,782 INFO L93 Difference]: Finished difference Result 7627 states and 10371 transitions. [2020-10-28 18:58:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:58:20,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 18:58:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:20,788 INFO L225 Difference]: With dead ends: 7627 [2020-10-28 18:58:20,789 INFO L226 Difference]: Without dead ends: 4960 [2020-10-28 18:58:20,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2020-10-28 18:58:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4904. [2020-10-28 18:58:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4904 states. [2020-10-28 18:58:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6611 transitions. [2020-10-28 18:58:21,069 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6611 transitions. Word has length 156 [2020-10-28 18:58:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:21,070 INFO L481 AbstractCegarLoop]: Abstraction has 4904 states and 6611 transitions. [2020-10-28 18:58:21,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:58:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6611 transitions. [2020-10-28 18:58:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:58:21,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:21,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:21,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 18:58:21,077 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:21,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1212297590, now seen corresponding path program 1 times [2020-10-28 18:58:21,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:21,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679986449] [2020-10-28 18:58:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:22,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 18:58:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 18:58:22,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:22,338 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:22,383 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 18:58:22,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679986449] [2020-10-28 18:58:22,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:58:22,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828035734] [2020-10-28 18:58:22,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:58:22,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:58:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:58:22,384 INFO L87 Difference]: Start difference. First operand 4904 states and 6611 transitions. Second operand 4 states. [2020-10-28 18:58:25,039 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-28 18:58:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:25,422 INFO L93 Difference]: Finished difference Result 13416 states and 18064 transitions. [2020-10-28 18:58:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:58:25,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 18:58:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:25,436 INFO L225 Difference]: With dead ends: 13416 [2020-10-28 18:58:25,436 INFO L226 Difference]: Without dead ends: 9683 [2020-10-28 18:58:25,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9683 states. [2020-10-28 18:58:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9683 to 9572. [2020-10-28 18:58:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9572 states. [2020-10-28 18:58:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9572 states to 9572 states and 12865 transitions. [2020-10-28 18:58:26,038 INFO L78 Accepts]: Start accepts. Automaton has 9572 states and 12865 transitions. Word has length 158 [2020-10-28 18:58:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:26,038 INFO L481 AbstractCegarLoop]: Abstraction has 9572 states and 12865 transitions. [2020-10-28 18:58:26,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:58:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9572 states and 12865 transitions. [2020-10-28 18:58:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:58:26,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:26,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:26,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 18:58:26,047 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash -246845659, now seen corresponding path program 1 times [2020-10-28 18:58:26,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:26,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201871090] [2020-10-28 18:58:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:27,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:27,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 18:58:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:27,506 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:27,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:27,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:27,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:58:27,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:27,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:58:27,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:27,569 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 18:58:27,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201871090] [2020-10-28 18:58:27,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:27,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:58:27,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318065673] [2020-10-28 18:58:27,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:58:27,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:58:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:58:27,571 INFO L87 Difference]: Start difference. First operand 9572 states and 12865 transitions. Second operand 6 states. [2020-10-28 18:58:27,918 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 18:58:30,570 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 18:58:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:31,022 INFO L93 Difference]: Finished difference Result 22890 states and 30702 transitions. [2020-10-28 18:58:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:58:31,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-28 18:58:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:31,039 INFO L225 Difference]: With dead ends: 22890 [2020-10-28 18:58:31,039 INFO L226 Difference]: Without dead ends: 13798 [2020-10-28 18:58:31,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:58:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13798 states. [2020-10-28 18:58:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13798 to 13701. [2020-10-28 18:58:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13701 states. [2020-10-28 18:58:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13701 states to 13701 states and 18347 transitions. [2020-10-28 18:58:32,094 INFO L78 Accepts]: Start accepts. Automaton has 13701 states and 18347 transitions. Word has length 158 [2020-10-28 18:58:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:32,094 INFO L481 AbstractCegarLoop]: Abstraction has 13701 states and 18347 transitions. [2020-10-28 18:58:32,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:58:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13701 states and 18347 transitions. [2020-10-28 18:58:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:58:32,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:32,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:32,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 18:58:32,104 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:32,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:32,105 INFO L82 PathProgramCache]: Analyzing trace with hash -548248832, now seen corresponding path program 1 times [2020-10-28 18:58:32,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:32,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012955152] [2020-10-28 18:58:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:37,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:58:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 18:58:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:58:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:37,502 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:37,539 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 18:58:37,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012955152] [2020-10-28 18:58:37,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:37,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:58:37,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534982998] [2020-10-28 18:58:37,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:58:37,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:37,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:58:37,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:37,541 INFO L87 Difference]: Start difference. First operand 13701 states and 18347 transitions. Second operand 5 states. [2020-10-28 18:58:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:40,503 INFO L93 Difference]: Finished difference Result 18548 states and 24840 transitions. [2020-10-28 18:58:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:58:40,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 18:58:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:40,524 INFO L225 Difference]: With dead ends: 18548 [2020-10-28 18:58:40,524 INFO L226 Difference]: Without dead ends: 18542 [2020-10-28 18:58:40,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:58:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18542 states. [2020-10-28 18:58:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18542 to 13909. [2020-10-28 18:58:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13909 states. [2020-10-28 18:58:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13909 states to 13909 states and 18553 transitions. [2020-10-28 18:58:41,736 INFO L78 Accepts]: Start accepts. Automaton has 13909 states and 18553 transitions. Word has length 158 [2020-10-28 18:58:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:41,737 INFO L481 AbstractCegarLoop]: Abstraction has 13909 states and 18553 transitions. [2020-10-28 18:58:41,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:58:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13909 states and 18553 transitions. [2020-10-28 18:58:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 18:58:41,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:41,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:41,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 18:58:41,747 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash 481290206, now seen corresponding path program 1 times [2020-10-28 18:58:41,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:41,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515280382] [2020-10-28 18:58:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:58:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:47,080 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:47,114 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 18:58:47,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515280382] [2020-10-28 18:58:47,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:47,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:58:47,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901147513] [2020-10-28 18:58:47,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:58:47,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:58:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:58:47,116 INFO L87 Difference]: Start difference. First operand 13909 states and 18553 transitions. Second operand 4 states. [2020-10-28 18:58:47,424 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:58:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:58:50,176 INFO L93 Difference]: Finished difference Result 31180 states and 41218 transitions. [2020-10-28 18:58:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:58:50,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 18:58:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:58:50,196 INFO L225 Difference]: With dead ends: 31180 [2020-10-28 18:58:50,196 INFO L226 Difference]: Without dead ends: 18094 [2020-10-28 18:58:50,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:58:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18094 states. [2020-10-28 18:58:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18094 to 17654. [2020-10-28 18:58:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17654 states. [2020-10-28 18:58:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17654 states to 17654 states and 23211 transitions. [2020-10-28 18:58:51,550 INFO L78 Accepts]: Start accepts. Automaton has 17654 states and 23211 transitions. Word has length 159 [2020-10-28 18:58:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:58:51,550 INFO L481 AbstractCegarLoop]: Abstraction has 17654 states and 23211 transitions. [2020-10-28 18:58:51,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:58:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 17654 states and 23211 transitions. [2020-10-28 18:58:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 18:58:51,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:58:51,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:58:51,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 18:58:51,571 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:58:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:58:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1883516066, now seen corresponding path program 1 times [2020-10-28 18:58:51,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:58:51,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138615296] [2020-10-28 18:58:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:58:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 18:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 18:58:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:56,932 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 18:58:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:58:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:58:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:58:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:58:56,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:58:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:58:56,969 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 18:58:56,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138615296] [2020-10-28 18:58:56,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:58:56,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:58:56,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405054921] [2020-10-28 18:58:56,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:58:56,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:58:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:58:56,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:58:56,971 INFO L87 Difference]: Start difference. First operand 17654 states and 23211 transitions. Second operand 6 states. [2020-10-28 18:59:00,129 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 18:59:00,427 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-28 18:59:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:59:01,623 INFO L93 Difference]: Finished difference Result 48046 states and 62947 transitions. [2020-10-28 18:59:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:59:01,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-28 18:59:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:59:01,664 INFO L225 Difference]: With dead ends: 48046 [2020-10-28 18:59:01,665 INFO L226 Difference]: Without dead ends: 30583 [2020-10-28 18:59:01,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:59:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30583 states. [2020-10-28 18:59:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30583 to 17948. [2020-10-28 18:59:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17948 states. [2020-10-28 18:59:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17948 states to 17948 states and 23286 transitions. [2020-10-28 18:59:03,376 INFO L78 Accepts]: Start accepts. Automaton has 17948 states and 23286 transitions. Word has length 159 [2020-10-28 18:59:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:59:03,377 INFO L481 AbstractCegarLoop]: Abstraction has 17948 states and 23286 transitions. [2020-10-28 18:59:03,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:59:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 17948 states and 23286 transitions. [2020-10-28 18:59:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 18:59:03,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:59:03,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:59:03,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 18:59:03,398 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:59:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:59:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2096323518, now seen corresponding path program 1 times [2020-10-28 18:59:03,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:59:03,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776381966] [2020-10-28 18:59:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:59:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:59:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:59:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:59:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:59:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:59:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 18:59:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0