/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:32:27,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:32:27,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:32:27,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:32:27,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:32:27,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:32:27,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:32:27,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:32:27,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:32:27,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:32:27,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:32:27,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:32:27,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:32:27,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:32:27,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:32:27,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:32:27,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:32:27,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:32:27,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:32:27,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:32:27,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:32:27,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:32:27,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:32:27,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:32:27,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:32:27,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:32:27,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:32:27,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:32:27,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:32:27,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:32:27,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:32:27,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:32:27,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:32:27,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:32:27,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:32:27,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:32:27,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:32:27,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:32:27,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:32:27,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:32:27,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:32:27,892 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 [2020-10-27 04:32:27,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:32:27,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:32:27,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:32:27,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:32:27,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:32:27,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:32:27,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:32:27,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:32:27,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:32:27,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:32:27,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:32:27,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:32:27,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:32:27,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:32:27,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:32:27,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:32:27,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:32:27,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:32:27,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:32:27,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:32:27,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:32:27,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:32:27,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:32:27,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:32:27,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:32:27,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:32:27,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:32:27,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:32:27,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:32:27,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:32:28,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:32:28,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:32:28,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:32:28,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:32:28,379 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:32:28,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:28,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed024018/7e7e7bf416354890bbff918aaefd9667/FLAGfaef9669a [2020-10-27 04:32:29,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:32:29,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:29,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed024018/7e7e7bf416354890bbff918aaefd9667/FLAGfaef9669a [2020-10-27 04:32:29,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed024018/7e7e7bf416354890bbff918aaefd9667 [2020-10-27 04:32:29,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:32:29,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:32:29,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:32:29,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:32:29,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:32:29,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15cd3e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29, skipping insertion in model container [2020-10-27 04:32:29,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:32:29,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:32:29,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:32:29,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:32:29,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:32:29,913 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:32:29,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29 WrapperNode [2020-10-27 04:32:29,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:32:29,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:32:29,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:32:29,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:32:29,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:29,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:30,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:30,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (1/1) ... [2020-10-27 04:32:30,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:32:30,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:32:30,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:32:30,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:32:30,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (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 [2020-10-27 04:32:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:32:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:32:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:32:30,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:32:30,128 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:32:30,129 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:32:30,129 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:32:30,129 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:32:30,129 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:32:30,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:32:30,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:32:30,130 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:32:30,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:32:30,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:32:30,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:32:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:32:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:32:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:32:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:32:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:32:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:32:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:32:30,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:32:30,823 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:32:30,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:30 BoogieIcfgContainer [2020-10-27 04:32:30,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:32:30,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:32:30,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:32:30,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:32:30,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:32:29" (1/3) ... [2020-10-27 04:32:30,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9153ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:30, skipping insertion in model container [2020-10-27 04:32:30,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:29" (2/3) ... [2020-10-27 04:32:30,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9153ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:30, skipping insertion in model container [2020-10-27 04:32:30,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:30" (3/3) ... [2020-10-27 04:32:30,834 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:30,846 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:32:30,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:32:30,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:32:30,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:32:30,891 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:32:30,892 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:32:30,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:32:30,892 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:32:30,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:32:30,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:32:30,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:32:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-27 04:32:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 04:32:30,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:30,922 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] [2020-10-27 04:32:30,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash -835047109, now seen corresponding path program 1 times [2020-10-27 04:32:30,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:30,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448632734] [2020-10-27 04:32:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:32:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-27 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:32:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:32:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:32:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:32:32,342 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:32:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:32:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:32:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:32:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:32,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:32:32,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:32,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:32,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:32,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:32:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:32:32,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:32:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:32:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:32,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448632734] [2020-10-27 04:32:32,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:32,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:32:32,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510188431] [2020-10-27 04:32:32,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:32:32,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:32,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:32:32,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:32:32,691 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 12 states. [2020-10-27 04:32:32,953 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:33,185 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:32:33,495 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:32:33,667 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:32:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:34,689 INFO L93 Difference]: Finished difference Result 193 states and 278 transitions. [2020-10-27 04:32:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:32:34,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 04:32:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:34,705 INFO L225 Difference]: With dead ends: 193 [2020-10-27 04:32:34,705 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 04:32:34,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:32:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 04:32:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-10-27 04:32:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 04:32:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2020-10-27 04:32:34,796 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 54 [2020-10-27 04:32:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:34,796 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2020-10-27 04:32:34,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:32:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2020-10-27 04:32:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 04:32:34,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:34,805 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] [2020-10-27 04:32:34,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:32:34,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1092643771, now seen corresponding path program 1 times [2020-10-27 04:32:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:34,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826973419] [2020-10-27 04:32:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:32:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:32:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2265 [2020-10-27 04:32:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:32:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:32:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:32:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:37,294 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:32:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:32:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:37,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:32:37,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:32:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:32:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:32:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:32:37,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:32:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:37,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:37,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:32:37,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:32:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:32:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:37,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826973419] [2020-10-27 04:32:37,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:37,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:32:37,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522916399] [2020-10-27 04:32:37,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:32:37,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:32:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:32:37,645 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand 13 states. [2020-10-27 04:32:37,823 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:38,025 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:32:38,196 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:32:39,644 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:32:39,804 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:32:39,999 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:32:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:42,182 INFO L93 Difference]: Finished difference Result 633 states and 879 transitions. [2020-10-27 04:32:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 04:32:42,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-27 04:32:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:42,196 INFO L225 Difference]: With dead ends: 633 [2020-10-27 04:32:42,196 INFO L226 Difference]: Without dead ends: 564 [2020-10-27 04:32:42,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 04:32:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-27 04:32:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 518. [2020-10-27 04:32:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-27 04:32:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 732 transitions. [2020-10-27 04:32:42,291 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 732 transitions. Word has length 70 [2020-10-27 04:32:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:42,291 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 732 transitions. [2020-10-27 04:32:42,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:32:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 732 transitions. [2020-10-27 04:32:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 04:32:42,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:42,295 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] [2020-10-27 04:32:42,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:32:42,296 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:42,296 INFO L82 PathProgramCache]: Analyzing trace with hash 758481624, now seen corresponding path program 1 times [2020-10-27 04:32:42,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:42,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267719709] [2020-10-27 04:32:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 04:32:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:32:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4691 [2020-10-27 04:32:47,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:32:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:32:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,201 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:47,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:32:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:32:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:47,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:32:47,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:47,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:47,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:32:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:32:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:47,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:32:47,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:32:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:47,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:32:47,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:32:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:47,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267719709] [2020-10-27 04:32:47,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:47,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:47,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559833160] [2020-10-27 04:32:47,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:47,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:47,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:47,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:47,458 INFO L87 Difference]: Start difference. First operand 518 states and 732 transitions. Second operand 9 states. [2020-10-27 04:32:47,618 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:48,991 INFO L93 Difference]: Finished difference Result 1440 states and 2043 transitions. [2020-10-27 04:32:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:32:48,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-27 04:32:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:49,005 INFO L225 Difference]: With dead ends: 1440 [2020-10-27 04:32:49,006 INFO L226 Difference]: Without dead ends: 957 [2020-10-27 04:32:49,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:32:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-27 04:32:49,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 905. [2020-10-27 04:32:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-27 04:32:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1274 transitions. [2020-10-27 04:32:49,147 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1274 transitions. Word has length 71 [2020-10-27 04:32:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:49,149 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1274 transitions. [2020-10-27 04:32:49,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:32:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1274 transitions. [2020-10-27 04:32:49,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 04:32:49,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:49,161 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] [2020-10-27 04:32:49,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:32:49,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:49,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:49,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1150677578, now seen corresponding path program 1 times [2020-10-27 04:32:49,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:49,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847315284] [2020-10-27 04:32:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:32:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:32:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,365 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:50,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:32:50,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:50,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:32:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:50,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:32:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:32:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:32:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:32:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:32:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:32:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:50,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847315284] [2020-10-27 04:32:50,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:50,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132565698] [2020-10-27 04:32:50,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:50,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:50,591 INFO L87 Difference]: Start difference. First operand 905 states and 1274 transitions. Second operand 9 states. [2020-10-27 04:32:50,761 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:52,171 INFO L93 Difference]: Finished difference Result 2543 states and 3572 transitions. [2020-10-27 04:32:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:32:52,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 04:32:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:52,182 INFO L225 Difference]: With dead ends: 2543 [2020-10-27 04:32:52,182 INFO L226 Difference]: Without dead ends: 1673 [2020-10-27 04:32:52,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:32:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-10-27 04:32:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1586. [2020-10-27 04:32:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-27 04:32:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2205 transitions. [2020-10-27 04:32:52,339 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2205 transitions. Word has length 72 [2020-10-27 04:32:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:52,340 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2205 transitions. [2020-10-27 04:32:52,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:32:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2205 transitions. [2020-10-27 04:32:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 04:32:52,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:52,341 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] [2020-10-27 04:32:52,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:32:52,342 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 14036156, now seen corresponding path program 1 times [2020-10-27 04:32:52,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:52,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344256831] [2020-10-27 04:32:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:32:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:32:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,499 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:53,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:53,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:32:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:32:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:32:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:32:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:32:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:32:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:32:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:53,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:32:53,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:53,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344256831] [2020-10-27 04:32:53,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:53,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:32:53,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069731687] [2020-10-27 04:32:53,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:32:53,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:53,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:32:53,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:32:53,771 INFO L87 Difference]: Start difference. First operand 1586 states and 2205 transitions. Second operand 12 states. [2020-10-27 04:32:53,972 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:32:54,151 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:32:54,576 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:54,992 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:55,189 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:55,352 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:55,960 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:56,143 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:32:56,313 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:56,501 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:32:56,755 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:32:56,924 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:00,945 INFO L93 Difference]: Finished difference Result 9997 states and 14355 transitions. [2020-10-27 04:33:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:33:00,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-27 04:33:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:00,998 INFO L225 Difference]: With dead ends: 9997 [2020-10-27 04:33:00,998 INFO L226 Difference]: Without dead ends: 8446 [2020-10-27 04:33:01,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:33:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8446 states. [2020-10-27 04:33:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8446 to 8201. [2020-10-27 04:33:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8201 states. [2020-10-27 04:33:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 10866 transitions. [2020-10-27 04:33:01,773 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 10866 transitions. Word has length 73 [2020-10-27 04:33:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:01,774 INFO L481 AbstractCegarLoop]: Abstraction has 8201 states and 10866 transitions. [2020-10-27 04:33:01,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:33:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 10866 transitions. [2020-10-27 04:33:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:33:01,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:01,776 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] [2020-10-27 04:33:01,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:33:01,776 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash 759007937, now seen corresponding path program 1 times [2020-10-27 04:33:01,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:01,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299734102] [2020-10-27 04:33:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 04:33:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,261 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:02,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:33:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:02,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:02,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:33:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:33:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:33:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:02,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299734102] [2020-10-27 04:33:02,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:02,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:33:02,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241936809] [2020-10-27 04:33:02,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:33:02,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:02,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:33:02,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:33:02,492 INFO L87 Difference]: Start difference. First operand 8201 states and 10866 transitions. Second operand 12 states. [2020-10-27 04:33:03,450 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:33:03,614 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:33:03,832 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:04,011 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:04,927 INFO L93 Difference]: Finished difference Result 10131 states and 13739 transitions. [2020-10-27 04:33:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:33:04,928 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-27 04:33:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:04,993 INFO L225 Difference]: With dead ends: 10131 [2020-10-27 04:33:04,993 INFO L226 Difference]: Without dead ends: 10128 [2020-10-27 04:33:05,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:33:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2020-10-27 04:33:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 9065. [2020-10-27 04:33:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9065 states. [2020-10-27 04:33:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 11730 transitions. [2020-10-27 04:33:05,918 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 11730 transitions. Word has length 74 [2020-10-27 04:33:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:05,919 INFO L481 AbstractCegarLoop]: Abstraction has 9065 states and 11730 transitions. [2020-10-27 04:33:05,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:33:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 11730 transitions. [2020-10-27 04:33:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 04:33:05,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:05,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:05,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:33:05,927 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:05,928 INFO L82 PathProgramCache]: Analyzing trace with hash -234951420, now seen corresponding path program 1 times [2020-10-27 04:33:05,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:05,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109682425] [2020-10-27 04:33:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,284 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:06,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:06,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:33:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:06,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:06,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:06,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:33:06,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:33:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:33:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:33:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:06,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:06,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:06,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:06,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109682425] [2020-10-27 04:33:06,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:06,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:33:06,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023519995] [2020-10-27 04:33:06,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:33:06,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:06,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:33:06,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:33:06,553 INFO L87 Difference]: Start difference. First operand 9065 states and 11730 transitions. Second operand 9 states. [2020-10-27 04:33:06,741 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:07,748 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:10,045 INFO L93 Difference]: Finished difference Result 30526 states and 40382 transitions. [2020-10-27 04:33:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:33:10,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-27 04:33:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:10,156 INFO L225 Difference]: With dead ends: 30526 [2020-10-27 04:33:10,157 INFO L226 Difference]: Without dead ends: 21506 [2020-10-27 04:33:10,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:33:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21506 states. [2020-10-27 04:33:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21506 to 20741. [2020-10-27 04:33:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20741 states. [2020-10-27 04:33:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20741 states to 20741 states and 27081 transitions. [2020-10-27 04:33:12,191 INFO L78 Accepts]: Start accepts. Automaton has 20741 states and 27081 transitions. Word has length 75 [2020-10-27 04:33:12,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:12,191 INFO L481 AbstractCegarLoop]: Abstraction has 20741 states and 27081 transitions. [2020-10-27 04:33:12,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:33:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand 20741 states and 27081 transitions. [2020-10-27 04:33:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 04:33:12,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:12,194 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] [2020-10-27 04:33:12,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:33:12,195 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1117838104, now seen corresponding path program 1 times [2020-10-27 04:33:12,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:12,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989428920] [2020-10-27 04:33:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 04:33:12,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:33:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-27 04:33:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:33:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:33:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:12,813 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:12,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:12,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:33:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:12,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:33:12,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:33:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:33:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:33:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:33:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:13,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989428920] [2020-10-27 04:33:13,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:13,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:33:13,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058341633] [2020-10-27 04:33:13,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:33:13,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:13,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:33:13,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:33:13,066 INFO L87 Difference]: Start difference. First operand 20741 states and 27081 transitions. Second operand 11 states. [2020-10-27 04:33:13,230 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:13,773 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:14,263 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-27 04:33:15,335 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:17,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:17,773 INFO L93 Difference]: Finished difference Result 46544 states and 61804 transitions. [2020-10-27 04:33:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:33:17,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 04:33:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:17,905 INFO L225 Difference]: With dead ends: 46544 [2020-10-27 04:33:17,906 INFO L226 Difference]: Without dead ends: 30617 [2020-10-27 04:33:17,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:33:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2020-10-27 04:33:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 29897. [2020-10-27 04:33:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29897 states. [2020-10-27 04:33:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29897 states to 29897 states and 39313 transitions. [2020-10-27 04:33:20,555 INFO L78 Accepts]: Start accepts. Automaton has 29897 states and 39313 transitions. Word has length 76 [2020-10-27 04:33:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:20,555 INFO L481 AbstractCegarLoop]: Abstraction has 29897 states and 39313 transitions. [2020-10-27 04:33:20,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:33:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 29897 states and 39313 transitions. [2020-10-27 04:33:20,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 04:33:20,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:20,558 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] [2020-10-27 04:33:20,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:33:20,558 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:20,559 INFO L82 PathProgramCache]: Analyzing trace with hash 716313010, now seen corresponding path program 1 times [2020-10-27 04:33:20,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:20,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792811222] [2020-10-27 04:33:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:33:24,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:33:24,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3944 [2020-10-27 04:33:24,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:33:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:33:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:33:24,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,731 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:33:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:24,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:24,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:33:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:33:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:33:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:33:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:24,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:33:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:24,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:24,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:33:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:24,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:24,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:24,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:33:24,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:33:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:25,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792811222] [2020-10-27 04:33:25,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:25,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:33:25,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125653725] [2020-10-27 04:33:25,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:33:25,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:25,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:33:25,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:33:25,013 INFO L87 Difference]: Start difference. First operand 29897 states and 39313 transitions. Second operand 13 states. [2020-10-27 04:33:25,367 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-27 04:33:25,555 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:26,128 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 04:33:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:29,551 INFO L93 Difference]: Finished difference Result 44773 states and 58921 transitions. [2020-10-27 04:33:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:33:29,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-27 04:33:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:29,693 INFO L225 Difference]: With dead ends: 44773 [2020-10-27 04:33:29,693 INFO L226 Difference]: Without dead ends: 36388 [2020-10-27 04:33:29,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:33:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36388 states. [2020-10-27 04:33:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36388 to 31193. [2020-10-27 04:33:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31193 states. [2020-10-27 04:33:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31193 states to 31193 states and 41100 transitions. [2020-10-27 04:33:32,335 INFO L78 Accepts]: Start accepts. Automaton has 31193 states and 41100 transitions. Word has length 77 [2020-10-27 04:33:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:32,335 INFO L481 AbstractCegarLoop]: Abstraction has 31193 states and 41100 transitions. [2020-10-27 04:33:32,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:33:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31193 states and 41100 transitions. [2020-10-27 04:33:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:33:32,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:32,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:32,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:33:32,350 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:32,351 INFO L82 PathProgramCache]: Analyzing trace with hash -314271445, now seen corresponding path program 1 times [2020-10-27 04:33:32,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:32,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594596647] [2020-10-27 04:33:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:33:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:33:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 04:33:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,762 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:33:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:33:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:37,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:37,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:37,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:33:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:37,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:33:37,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:33:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:37,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:33:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:33:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:33:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:38,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:33:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:33:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:38,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:33:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:33:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:38,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:33:38,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594596647] [2020-10-27 04:33:38,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:33:38,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:33:38,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532019635] [2020-10-27 04:33:38,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:33:38,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:33:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:33:38,147 INFO L87 Difference]: Start difference. First operand 31193 states and 41100 transitions. Second operand 15 states. [2020-10-27 04:33:38,342 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:38,547 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:33:38,926 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:33:39,496 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:33:39,672 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:39,860 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:40,338 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:44,107 INFO L93 Difference]: Finished difference Result 69486 states and 91539 transitions. [2020-10-27 04:33:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:33:44,108 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2020-10-27 04:33:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:44,316 INFO L225 Difference]: With dead ends: 69486 [2020-10-27 04:33:44,316 INFO L226 Difference]: Without dead ends: 47879 [2020-10-27 04:33:44,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:33:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47879 states. [2020-10-27 04:33:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47879 to 44552. [2020-10-27 04:33:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44552 states. [2020-10-27 04:33:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44552 states to 44552 states and 58103 transitions. [2020-10-27 04:33:48,431 INFO L78 Accepts]: Start accepts. Automaton has 44552 states and 58103 transitions. Word has length 112 [2020-10-27 04:33:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:48,432 INFO L481 AbstractCegarLoop]: Abstraction has 44552 states and 58103 transitions. [2020-10-27 04:33:48,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:33:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 44552 states and 58103 transitions. [2020-10-27 04:33:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:33:48,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:48,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:48,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:33:48,450 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:48,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2040578565, now seen corresponding path program 1 times [2020-10-27 04:33:48,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:48,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268944049] [2020-10-27 04:33:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:33:53,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:33:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:33:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:33:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:33:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 04:33:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,800 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:53,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:33:53,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:33:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:33:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:33:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:33:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:33:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:33:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:33:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:33:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:33:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:33:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:33:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:33:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:54,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 04:33:54,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268944049] [2020-10-27 04:33:54,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:33:54,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:33:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031729688] [2020-10-27 04:33:54,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:33:54,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:33:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:33:54,145 INFO L87 Difference]: Start difference. First operand 44552 states and 58103 transitions. Second operand 15 states. [2020-10-27 04:33:54,526 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-27 04:33:54,724 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:33:55,353 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2020-10-27 04:33:56,039 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2020-10-27 04:33:56,410 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-27 04:33:56,756 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 125 [2020-10-27 04:33:56,906 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 04:33:57,893 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-27 04:33:58,522 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 04:33:59,080 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 04:34:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:04,061 INFO L93 Difference]: Finished difference Result 116497 states and 152143 transitions. [2020-10-27 04:34:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 04:34:04,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2020-10-27 04:34:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:04,373 INFO L225 Difference]: With dead ends: 116497 [2020-10-27 04:34:04,373 INFO L226 Difference]: Without dead ends: 77606 [2020-10-27 04:34:04,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=499, Invalid=1393, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 04:34:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77606 states. [2020-10-27 04:34:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77606 to 68745. [2020-10-27 04:34:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68745 states. [2020-10-27 04:34:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68745 states to 68745 states and 89333 transitions. [2020-10-27 04:34:09,586 INFO L78 Accepts]: Start accepts. Automaton has 68745 states and 89333 transitions. Word has length 112 [2020-10-27 04:34:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:09,586 INFO L481 AbstractCegarLoop]: Abstraction has 68745 states and 89333 transitions. [2020-10-27 04:34:09,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:34:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 68745 states and 89333 transitions. [2020-10-27 04:34:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:34:09,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:09,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:09,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:34:09,605 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:09,605 INFO L82 PathProgramCache]: Analyzing trace with hash -87445406, now seen corresponding path program 1 times [2020-10-27 04:34:09,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:09,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24437662] [2020-10-27 04:34:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:34:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:34:14,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 04:34:14,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,845 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:34:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:34:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:34:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:34:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:34:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:34:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:34:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:34:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:34:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:34:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:34:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:34:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:34:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:34:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:34:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:34:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:15,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:34:15,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24437662] [2020-10-27 04:34:15,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:34:15,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:34:15,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386550167] [2020-10-27 04:34:15,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:34:15,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:34:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:34:15,294 INFO L87 Difference]: Start difference. First operand 68745 states and 89333 transitions. Second operand 18 states. [2020-10-27 04:34:15,535 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:34:15,754 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:34:16,111 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:34:16,771 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:34:17,009 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 04:34:17,305 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:34:17,880 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:34:18,702 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 04:34:18,896 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-27 04:34:19,497 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 04:34:19,885 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:34:22,485 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:34:22,808 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:34:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:32,503 INFO L93 Difference]: Finished difference Result 221055 states and 286901 transitions. [2020-10-27 04:34:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:34:32,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-27 04:34:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:33,352 INFO L225 Difference]: With dead ends: 221055 [2020-10-27 04:34:33,352 INFO L226 Difference]: Without dead ends: 167060 [2020-10-27 04:34:33,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=779, Invalid=3253, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 04:34:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167060 states. [2020-10-27 04:34:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167060 to 142360. [2020-10-27 04:34:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142360 states. [2020-10-27 04:34:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142360 states to 142360 states and 182905 transitions. [2020-10-27 04:34:45,471 INFO L78 Accepts]: Start accepts. Automaton has 142360 states and 182905 transitions. Word has length 113 [2020-10-27 04:34:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:45,471 INFO L481 AbstractCegarLoop]: Abstraction has 142360 states and 182905 transitions. [2020-10-27 04:34:45,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:34:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 142360 states and 182905 transitions. [2020-10-27 04:34:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:34:45,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:45,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:45,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:34:45,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash -819412832, now seen corresponding path program 1 times [2020-10-27 04:34:45,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:45,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528997740] [2020-10-27 04:34:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:48,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 04:34:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,729 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:34:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:34:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:34:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:34:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:34:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:34:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:34:50,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:34:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:34:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:34:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:34:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:34:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:50,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:50,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:34:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:34:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:34:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:34:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:34:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:34:51,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528997740] [2020-10-27 04:34:51,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:34:51,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:34:51,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053146433] [2020-10-27 04:34:51,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:34:51,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:34:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:34:51,098 INFO L87 Difference]: Start difference. First operand 142360 states and 182905 transitions. Second operand 18 states. [2020-10-27 04:34:51,294 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:34:51,487 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:34:51,930 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:34:52,336 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:34:52,705 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:34:53,227 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:34:53,875 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:35:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:05,284 INFO L93 Difference]: Finished difference Result 257928 states and 331469 transitions. [2020-10-27 04:35:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:35:05,285 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-27 04:35:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:06,017 INFO L225 Difference]: With dead ends: 257928 [2020-10-27 04:35:06,018 INFO L226 Difference]: Without dead ends: 159186 [2020-10-27 04:35:06,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=476, Invalid=1416, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 04:35:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159186 states. [2020-10-27 04:35:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159186 to 142178. [2020-10-27 04:35:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142178 states. [2020-10-27 04:35:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142178 states to 142178 states and 181855 transitions. [2020-10-27 04:35:17,355 INFO L78 Accepts]: Start accepts. Automaton has 142178 states and 181855 transitions. Word has length 113 [2020-10-27 04:35:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:17,356 INFO L481 AbstractCegarLoop]: Abstraction has 142178 states and 181855 transitions. [2020-10-27 04:35:17,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:35:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 142178 states and 181855 transitions. [2020-10-27 04:35:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:35:17,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:17,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:17,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:35:17,664 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1998005060, now seen corresponding path program 1 times [2020-10-27 04:35:17,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:17,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825423399] [2020-10-27 04:35:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:35:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:35:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 04:35:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,120 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:35:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:35:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:35:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:19,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:19,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:35:19,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:35:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:35:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:35:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:35:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:35:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:35:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:35:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:35:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:35:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:19,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:19,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:19,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:35:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825423399] [2020-10-27 04:35:19,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:35:19,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:35:19,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124506459] [2020-10-27 04:35:19,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:35:19,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:35:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:35:19,432 INFO L87 Difference]: Start difference. First operand 142178 states and 181855 transitions. Second operand 13 states. [2020-10-27 04:35:19,626 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:35:20,368 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 04:35:21,714 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:35:24,833 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:35:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:36,148 INFO L93 Difference]: Finished difference Result 257697 states and 332142 transitions. [2020-10-27 04:35:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:35:36,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-27 04:35:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:36,776 INFO L225 Difference]: With dead ends: 257697 [2020-10-27 04:35:36,777 INFO L226 Difference]: Without dead ends: 176594 [2020-10-27 04:35:36,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 04:35:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176594 states. [2020-10-27 04:35:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176594 to 175434. [2020-10-27 04:35:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175434 states. [2020-10-27 04:35:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175434 states to 175434 states and 222713 transitions. [2020-10-27 04:35:50,732 INFO L78 Accepts]: Start accepts. Automaton has 175434 states and 222713 transitions. Word has length 114 [2020-10-27 04:35:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:50,733 INFO L481 AbstractCegarLoop]: Abstraction has 175434 states and 222713 transitions. [2020-10-27 04:35:50,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:35:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 175434 states and 222713 transitions. [2020-10-27 04:35:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:35:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:50,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:50,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:35:50,745 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 268442550, now seen corresponding path program 1 times [2020-10-27 04:35:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:50,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117062964] [2020-10-27 04:35:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking...