/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/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:09:31,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:09:31,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:09:31,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:09:31,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:09:31,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:09:31,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:09:31,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:09:31,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:09:31,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:09:31,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:09:31,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:09:31,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:09:31,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:09:31,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:09:31,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:09:31,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:09:31,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:09:31,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:09:31,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:09:31,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:09:31,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:09:31,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:09:31,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:09:31,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:09:31,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:09:31,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:09:31,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:09:31,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:09:31,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:09:31,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:09:31,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:09:31,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:09:31,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:09:31,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:09:31,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:09:31,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:09:31,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:09:31,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:09:31,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:09:31,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:09:31,789 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 04:09:31,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:09:31,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:09:31,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:09:31,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:09:31,847 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:09:31,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:09:31,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:09:31,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:09:31,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:09:31,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:09:31,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:09:31,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:09:31,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:09:31,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:09:31,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:09:31,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:09:31,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:09:31,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:09:31,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:09:31,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:09:31,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:09:31,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:09:31,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:09:31,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:09:31,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:09:31,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:09:31,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:09:31,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:09:31,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:09:31,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:09:32,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:09:32,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:09:32,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:09:32,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:09:32,362 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:09:32,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-27 04:09:32,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d2caa8d2/69789717a564497197d5640dd813bc2c/FLAG9c42a5cf8 [2020-10-27 04:09:33,357 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:09:33,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-27 04:09:33,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d2caa8d2/69789717a564497197d5640dd813bc2c/FLAG9c42a5cf8 [2020-10-27 04:09:33,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d2caa8d2/69789717a564497197d5640dd813bc2c [2020-10-27 04:09:33,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:09:33,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:09:33,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:09:33,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:09:33,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:09:33,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7e1248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33, skipping insertion in model container [2020-10-27 04:09:33,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:09:33,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:09:34,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:09:34,487 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:09:34,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:09:34,733 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:09:34,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34 WrapperNode [2020-10-27 04:09:34,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:09:34,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:09:34,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:09:34,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:09:34,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... [2020-10-27 04:09:34,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:09:34,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:09:34,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:09:34,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:09:34,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:09:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:09:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:09:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 04:09:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 04:09:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:09:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2020-10-27 04:09:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 04:09:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2020-10-27 04:09:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure system_cleanup [2020-10-27 04:09:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2020-10-27 04:09:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2020-10-27 04:09:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2020-10-27 04:09:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure hello_message [2020-10-27 04:09:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure open_message [2020-10-27 04:09:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure close_message [2020-10-27 04:09:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2020-10-27 04:09:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2020-10-27 04:09:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2020-10-27 04:09:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure user_initialize [2020-10-27 04:09:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:09:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-27 04:09:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 04:09:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 04:09:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 04:09:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 04:09:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 04:09:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 04:09:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 04:09:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 04:09:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 04:09:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 04:09:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 04:09:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 04:09:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 04:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 04:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 04:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 04:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 04:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 04:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 04:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 04:09:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 04:09:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 04:09:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 04:09:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 04:09:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 04:09:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 04:09:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 04:09:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 04:09:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 04:09:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 04:09:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 04:09:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 04:09:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 04:09:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 04:09:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 04:09:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 04:09:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:09:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 04:09:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 04:09:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 04:09:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 04:09:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 04:09:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 04:09:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 04:09:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 04:09:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 04:09:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 04:09:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 04:09:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 04:09:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 04:09:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 04:09:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 04:09:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 04:09:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-10-27 04:09:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2020-10-27 04:09:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-27 04:09:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-10-27 04:09:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2020-10-27 04:09:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-27 04:09:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-27 04:09:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-27 04:09:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2020-10-27 04:09:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 04:09:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-27 04:09:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2020-10-27 04:09:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2020-10-27 04:09:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2020-10-27 04:09:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-10-27 04:09:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2020-10-27 04:09:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2020-10-27 04:09:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-27 04:09:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2020-10-27 04:09:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2020-10-27 04:09:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure index [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2020-10-27 04:09:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2020-10-27 04:09:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2020-10-27 04:09:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2020-10-27 04:09:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure system_cleanup [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure hello_message [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure open_message [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure close_message [2020-10-27 04:09:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure user_initialize [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:09:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:09:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:09:36,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:09:36,678 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:09:36,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:36 BoogieIcfgContainer [2020-10-27 04:09:36,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:09:36,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:09:36,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:09:36,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:09:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:09:33" (1/3) ... [2020-10-27 04:09:36,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196fccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:36, skipping insertion in model container [2020-10-27 04:09:36,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:34" (2/3) ... [2020-10-27 04:09:36,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196fccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:36, skipping insertion in model container [2020-10-27 04:09:36,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:36" (3/3) ... [2020-10-27 04:09:36,690 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2020-10-27 04:09:36,703 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:09:36,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:09:36,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:09:36,752 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:09:36,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:09:36,753 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:09:36,753 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:09:36,753 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:09:36,753 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:09:36,753 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:09:36,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:09:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-27 04:09:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 04:09:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:36,785 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] [2020-10-27 04:09:36,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:36,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1553772573, now seen corresponding path program 1 times [2020-10-27 04:09:36,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:36,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982327210] [2020-10-27 04:09:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:09:40,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:09:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3335 [2020-10-27 04:09:40,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 04:09:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:09:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:09:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:09:40,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:09:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:09:40,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:09:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:09:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:40,733 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 04:09:40,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982327210] [2020-10-27 04:09:40,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:09:40,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:09:40,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015292346] [2020-10-27 04:09:40,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:09:40,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:09:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:09:40,763 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 8 states. [2020-10-27 04:09:41,328 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:09:41,463 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:09:41,593 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:09:42,069 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:09:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:43,884 INFO L93 Difference]: Finished difference Result 390 states and 541 transitions. [2020-10-27 04:09:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:09:43,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 04:09:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:43,902 INFO L225 Difference]: With dead ends: 390 [2020-10-27 04:09:43,903 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 04:09:43,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:09:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 04:09:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 166. [2020-10-27 04:09:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-27 04:09:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2020-10-27 04:09:44,012 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 29 [2020-10-27 04:09:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:44,013 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2020-10-27 04:09:44,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:09:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2020-10-27 04:09:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 04:09:44,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:44,018 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 04:09:44,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:09:44,019 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1503468407, now seen corresponding path program 1 times [2020-10-27 04:09:44,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:44,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567193984] [2020-10-27 04:09:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 04:09:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:09:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:09:49,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 04:09:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:09:49,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:49,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:09:49,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:09:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:09:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:09:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:09:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:49,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:09:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:49,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:09:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:09:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:09:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 04:09:49,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567193984] [2020-10-27 04:09:49,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:49,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:09:49,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777492051] [2020-10-27 04:09:49,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:09:49,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:09:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:09:49,525 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand 10 states. [2020-10-27 04:09:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:52,348 INFO L93 Difference]: Finished difference Result 396 states and 529 transitions. [2020-10-27 04:09:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:09:52,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-27 04:09:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:52,355 INFO L225 Difference]: With dead ends: 396 [2020-10-27 04:09:52,356 INFO L226 Difference]: Without dead ends: 235 [2020-10-27 04:09:52,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:09:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-27 04:09:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 169. [2020-10-27 04:09:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 04:09:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2020-10-27 04:09:52,396 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 45 [2020-10-27 04:09:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:52,396 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2020-10-27 04:09:52,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:09:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2020-10-27 04:09:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 04:09:52,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:52,399 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 04:09:52,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:09:52,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1032844947, now seen corresponding path program 1 times [2020-10-27 04:09:52,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:52,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614670018] [2020-10-27 04:09:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4799 [2020-10-27 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:09:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:09:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:09:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:09:57,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614670018] [2020-10-27 04:09:57,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:09:57,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:09:57,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065542380] [2020-10-27 04:09:57,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:09:57,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:57,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:09:57,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:09:57,649 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand 12 states. [2020-10-27 04:10:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:02,394 INFO L93 Difference]: Finished difference Result 474 states and 680 transitions. [2020-10-27 04:10:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:10:02,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-27 04:10:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:02,400 INFO L225 Difference]: With dead ends: 474 [2020-10-27 04:10:02,400 INFO L226 Difference]: Without dead ends: 336 [2020-10-27 04:10:02,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:10:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-27 04:10:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 264. [2020-10-27 04:10:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-27 04:10:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 355 transitions. [2020-10-27 04:10:02,495 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 355 transitions. Word has length 46 [2020-10-27 04:10:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:02,496 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 355 transitions. [2020-10-27 04:10:02,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:10:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 355 transitions. [2020-10-27 04:10:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:10:02,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:02,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 04:10:02,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:10:02,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1886416777, now seen corresponding path program 1 times [2020-10-27 04:10:02,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:02,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211278920] [2020-10-27 04:10:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:10:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:10:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 04:10:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:10:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:10:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:10:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:10:07,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:10:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:07,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:10:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:10:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:10:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:10:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:08,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:08,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:10:08,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:10:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 04:10:08,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211278920] [2020-10-27 04:10:08,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:08,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:10:08,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906160273] [2020-10-27 04:10:08,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:10:08,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:08,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:10:08,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:10:08,019 INFO L87 Difference]: Start difference. First operand 264 states and 355 transitions. Second operand 11 states. [2020-10-27 04:10:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:11,136 INFO L93 Difference]: Finished difference Result 620 states and 938 transitions. [2020-10-27 04:10:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:10:11,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-27 04:10:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:11,149 INFO L225 Difference]: With dead ends: 620 [2020-10-27 04:10:11,150 INFO L226 Difference]: Without dead ends: 387 [2020-10-27 04:10:11,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:10:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-27 04:10:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 342. [2020-10-27 04:10:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-27 04:10:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 477 transitions. [2020-10-27 04:10:11,212 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 477 transitions. Word has length 68 [2020-10-27 04:10:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:11,213 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 477 transitions. [2020-10-27 04:10:11,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:10:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 477 transitions. [2020-10-27 04:10:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:10:11,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:11,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 04:10:11,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:10:11,217 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1492049991, now seen corresponding path program 1 times [2020-10-27 04:10:11,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:11,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386132805] [2020-10-27 04:10:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:10:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:10:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:10:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:10:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:10:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:10:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:10:16,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:10:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:10:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:10:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:16,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:10:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:10:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:10:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:10:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 04:10:16,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386132805] [2020-10-27 04:10:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:16,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:10:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910924330] [2020-10-27 04:10:16,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:10:16,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:16,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:10:16,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:10:16,991 INFO L87 Difference]: Start difference. First operand 342 states and 477 transitions. Second operand 14 states. [2020-10-27 04:10:18,061 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-27 04:10:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:22,306 INFO L93 Difference]: Finished difference Result 1066 states and 1577 transitions. [2020-10-27 04:10:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:10:22,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-27 04:10:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:22,316 INFO L225 Difference]: With dead ends: 1066 [2020-10-27 04:10:22,316 INFO L226 Difference]: Without dead ends: 738 [2020-10-27 04:10:22,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:10:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-10-27 04:10:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 662. [2020-10-27 04:10:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-27 04:10:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 984 transitions. [2020-10-27 04:10:22,411 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 984 transitions. Word has length 68 [2020-10-27 04:10:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:22,411 INFO L481 AbstractCegarLoop]: Abstraction has 662 states and 984 transitions. [2020-10-27 04:10:22,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:10:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 984 transitions. [2020-10-27 04:10:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 04:10:22,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:22,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 04:10:22,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:10:22,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash 712259555, now seen corresponding path program 1 times [2020-10-27 04:10:22,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:22,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59560812] [2020-10-27 04:10:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-27 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:10:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:10:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:10:28,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:10:28,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:10:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:10:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:10:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:28,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:28,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:10:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 04:10:28,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59560812] [2020-10-27 04:10:28,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:28,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 04:10:28,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163947212] [2020-10-27 04:10:28,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 04:10:28,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:28,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 04:10:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:10:28,925 INFO L87 Difference]: Start difference. First operand 662 states and 984 transitions. Second operand 24 states. [2020-10-27 04:10:30,216 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-27 04:10:30,527 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-27 04:10:31,370 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-27 04:10:32,028 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-27 04:10:32,670 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-27 04:10:32,864 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 04:10:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:41,159 INFO L93 Difference]: Finished difference Result 1518 states and 2309 transitions. [2020-10-27 04:10:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:10:41,161 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 69 [2020-10-27 04:10:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:41,169 INFO L225 Difference]: With dead ends: 1518 [2020-10-27 04:10:41,169 INFO L226 Difference]: Without dead ends: 849 [2020-10-27 04:10:41,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=589, Invalid=3317, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:10:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-10-27 04:10:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 763. [2020-10-27 04:10:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-27 04:10:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1111 transitions. [2020-10-27 04:10:41,280 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1111 transitions. Word has length 69 [2020-10-27 04:10:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:41,282 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 1111 transitions. [2020-10-27 04:10:41,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 04:10:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1111 transitions. [2020-10-27 04:10:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 04:10:41,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:41,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 04:10:41,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:10:41,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:41,286 INFO L82 PathProgramCache]: Analyzing trace with hash -985965579, now seen corresponding path program 1 times [2020-10-27 04:10:41,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:41,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181982840] [2020-10-27 04:10:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 04:10:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:10:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:10:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:10:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:10:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:10:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:47,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:10:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:10:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:10:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:10:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 04:10:47,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181982840] [2020-10-27 04:10:47,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:47,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 04:10:47,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985422659] [2020-10-27 04:10:47,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 04:10:47,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:47,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 04:10:47,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:10:47,906 INFO L87 Difference]: Start difference. First operand 763 states and 1111 transitions. Second operand 28 states. [2020-10-27 04:10:49,238 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-27 04:10:49,449 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-27 04:10:49,721 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-27 04:10:50,001 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 04:10:50,610 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-27 04:10:50,856 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-27 04:10:51,064 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-27 04:10:51,477 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-27 04:10:51,977 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 04:10:52,393 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-27 04:10:52,622 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-27 04:10:53,413 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-27 04:10:54,742 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-27 04:10:55,119 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 04:10:55,751 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-27 04:10:59,433 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-27 04:11:00,443 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-27 04:11:01,578 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 04:11:04,509 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 04:11:07,971 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-27 04:11:08,208 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-27 04:11:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:09,472 INFO L93 Difference]: Finished difference Result 2450 states and 3911 transitions. [2020-10-27 04:11:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-10-27 04:11:09,474 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 73 [2020-10-27 04:11:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:09,492 INFO L225 Difference]: With dead ends: 2450 [2020-10-27 04:11:09,492 INFO L226 Difference]: Without dead ends: 1831 [2020-10-27 04:11:09,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4735 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=2070, Invalid=11502, Unknown=0, NotChecked=0, Total=13572 [2020-10-27 04:11:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-10-27 04:11:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1557. [2020-10-27 04:11:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1557 states. [2020-10-27 04:11:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2392 transitions. [2020-10-27 04:11:09,690 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2392 transitions. Word has length 73 [2020-10-27 04:11:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:09,690 INFO L481 AbstractCegarLoop]: Abstraction has 1557 states and 2392 transitions. [2020-10-27 04:11:09,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 04:11:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2392 transitions. [2020-10-27 04:11:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:11:09,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:09,696 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-10-27 04:11:09,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:11:09,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:09,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2025299031, now seen corresponding path program 1 times [2020-10-27 04:11:09,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:09,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478923611] [2020-10-27 04:11:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:11:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:15,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:11:15,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:11:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:11:15,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 04:11:15,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:11:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:11:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:15,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:11:15,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:11:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:11:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:11:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:11:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:11:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:15,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:11:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:11:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:15,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:15,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:11:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:11:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:11:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:11:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:11:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:11:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 04:11:15,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478923611] [2020-10-27 04:11:15,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:15,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:11:15,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105121117] [2020-10-27 04:11:15,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:11:15,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:11:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:11:15,887 INFO L87 Difference]: Start difference. First operand 1557 states and 2392 transitions. Second operand 17 states. [2020-10-27 04:11:17,257 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-27 04:11:17,681 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-27 04:11:18,050 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-27 04:11:18,453 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2020-10-27 04:11:18,871 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-10-27 04:11:19,103 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 04:11:19,497 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-27 04:11:19,855 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-10-27 04:11:20,277 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2020-10-27 04:11:20,565 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-27 04:11:20,797 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-27 04:11:21,120 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-27 04:11:21,461 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-27 04:11:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:25,194 INFO L93 Difference]: Finished difference Result 3145 states and 5510 transitions. [2020-10-27 04:11:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:11:25,195 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-27 04:11:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:25,212 INFO L225 Difference]: With dead ends: 3145 [2020-10-27 04:11:25,212 INFO L226 Difference]: Without dead ends: 1596 [2020-10-27 04:11:25,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:11:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-10-27 04:11:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1526. [2020-10-27 04:11:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-10-27 04:11:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2343 transitions. [2020-10-27 04:11:25,408 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2343 transitions. Word has length 95 [2020-10-27 04:11:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:25,408 INFO L481 AbstractCegarLoop]: Abstraction has 1526 states and 2343 transitions. [2020-10-27 04:11:25,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:11:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2343 transitions. [2020-10-27 04:11:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 04:11:25,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:25,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:25,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:11:25,420 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 858950363, now seen corresponding path program 1 times [2020-10-27 04:11:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750803531] [2020-10-27 04:11:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:11:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:11:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:11:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:11:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:30,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:11:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:11:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:11:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:11:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:11:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:11:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:11:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:11:30,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:11:30,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:11:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:11:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:11:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 04:11:31,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750803531] [2020-10-27 04:11:31,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:31,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:11:31,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156473095] [2020-10-27 04:11:31,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:11:31,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:11:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:11:31,105 INFO L87 Difference]: Start difference. First operand 1526 states and 2343 transitions. Second operand 18 states. [2020-10-27 04:11:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:39,712 INFO L93 Difference]: Finished difference Result 3278 states and 5765 transitions. [2020-10-27 04:11:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 04:11:39,713 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-27 04:11:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:39,738 INFO L225 Difference]: With dead ends: 3278 [2020-10-27 04:11:39,738 INFO L226 Difference]: Without dead ends: 2561 [2020-10-27 04:11:39,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=494, Invalid=2698, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:11:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-10-27 04:11:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2459. [2020-10-27 04:11:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2020-10-27 04:11:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3875 transitions. [2020-10-27 04:11:40,031 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3875 transitions. Word has length 80 [2020-10-27 04:11:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:40,031 INFO L481 AbstractCegarLoop]: Abstraction has 2459 states and 3875 transitions. [2020-10-27 04:11:40,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:11:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3875 transitions. [2020-10-27 04:11:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 04:11:40,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:40,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 04:11:40,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:11:40,034 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash -2082707236, now seen corresponding path program 1 times [2020-10-27 04:11:40,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:40,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357098371] [2020-10-27 04:11:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 04:11:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:11:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:11:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:11:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:11:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:46,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:11:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:11:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:11:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:11:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:11:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:11:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:11:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:11:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 04:11:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357098371] [2020-10-27 04:11:47,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:47,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 04:11:47,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455638603] [2020-10-27 04:11:47,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 04:11:47,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:47,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 04:11:47,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:11:47,057 INFO L87 Difference]: Start difference. First operand 2459 states and 3875 transitions. Second operand 28 states. [2020-10-27 04:11:49,081 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-27 04:11:49,467 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-27 04:11:49,742 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-27 04:11:50,008 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-27 04:11:50,327 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2020-10-27 04:11:50,611 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-27 04:11:50,853 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-27 04:11:51,584 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2020-10-27 04:11:51,912 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2020-10-27 04:11:52,355 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 89 [2020-10-27 04:11:52,691 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-27 04:11:52,931 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 04:11:53,346 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-27 04:11:53,610 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 04:11:54,143 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-27 04:11:54,441 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-27 04:11:55,507 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-27 04:11:55,843 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-27 04:11:56,280 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2020-10-27 04:11:57,509 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 04:11:57,938 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-27 04:11:58,264 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-10-27 04:11:58,800 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-27 04:11:59,100 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-27 04:11:59,397 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2020-10-27 04:11:59,984 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-27 04:12:00,446 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-27 04:12:01,246 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2020-10-27 04:12:03,941 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-27 04:12:04,338 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-27 04:12:04,782 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-10-27 04:12:05,380 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-27 04:12:05,741 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-27 04:12:06,287 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2020-10-27 04:12:08,146 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-27 04:12:09,028 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 04:12:10,436 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-27 04:12:10,937 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 04:12:11,168 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-27 04:12:11,567 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-10-27 04:12:12,727 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:12:21,547 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-27 04:12:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:22,309 INFO L93 Difference]: Finished difference Result 6438 states and 11471 transitions. [2020-10-27 04:12:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-27 04:12:22,310 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2020-10-27 04:12:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:22,356 INFO L225 Difference]: With dead ends: 6438 [2020-10-27 04:12:22,357 INFO L226 Difference]: Without dead ends: 3981 [2020-10-27 04:12:22,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5642 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=2473, Invalid=13529, Unknown=0, NotChecked=0, Total=16002 [2020-10-27 04:12:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2020-10-27 04:12:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3656. [2020-10-27 04:12:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-10-27 04:12:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 6163 transitions. [2020-10-27 04:12:22,972 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 6163 transitions. Word has length 80 [2020-10-27 04:12:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:22,972 INFO L481 AbstractCegarLoop]: Abstraction has 3656 states and 6163 transitions. [2020-10-27 04:12:22,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 04:12:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 6163 transitions. [2020-10-27 04:12:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:12:22,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:22,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 04:12:22,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:12:22,977 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -966022127, now seen corresponding path program 1 times [2020-10-27 04:12:22,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:22,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847018857] [2020-10-27 04:12:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6340 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:12:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:12:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:12:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:12:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:12:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:12:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:12:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:12:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:12:30,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:30,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:12:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:12:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 04:12:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:12:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:12:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:12:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 04:12:31,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847018857] [2020-10-27 04:12:31,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:31,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:12:31,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901468173] [2020-10-27 04:12:31,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:12:31,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:12:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:12:31,079 INFO L87 Difference]: Start difference. First operand 3656 states and 6163 transitions. Second operand 29 states. [2020-10-27 04:12:32,612 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-27 04:12:33,490 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 04:12:33,907 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-27 04:12:34,137 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-27 04:12:34,491 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-27 04:12:34,967 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 04:12:35,234 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-27 04:12:36,857 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 04:12:37,027 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 04:12:37,660 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-27 04:12:37,910 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-27 04:12:38,131 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-27 04:12:38,381 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-27 04:12:38,647 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-27 04:12:39,623 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-27 04:12:40,423 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-27 04:12:41,064 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 04:12:42,252 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-27 04:12:42,487 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 04:12:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:46,828 INFO L93 Difference]: Finished difference Result 8277 states and 14653 transitions. [2020-10-27 04:12:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 04:12:46,830 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 95 [2020-10-27 04:12:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:46,880 INFO L225 Difference]: With dead ends: 8277 [2020-10-27 04:12:46,880 INFO L226 Difference]: Without dead ends: 4204 [2020-10-27 04:12:46,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=775, Invalid=4627, Unknown=0, NotChecked=0, Total=5402 [2020-10-27 04:12:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2020-10-27 04:12:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3790. [2020-10-27 04:12:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3790 states. [2020-10-27 04:12:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 6312 transitions. [2020-10-27 04:12:47,448 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 6312 transitions. Word has length 95 [2020-10-27 04:12:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:47,450 INFO L481 AbstractCegarLoop]: Abstraction has 3790 states and 6312 transitions. [2020-10-27 04:12:47,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:12:47,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 6312 transitions. [2020-10-27 04:12:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:12:47,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:47,455 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 04:12:47,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:12:47,455 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash 664276963, now seen corresponding path program 1 times [2020-10-27 04:12:47,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:47,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287120533] [2020-10-27 04:12:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:51,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:53,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 04:12:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6292 [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 04:12:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:54,823 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-27 04:12:55,215 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-10-27 04:12:55,528 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-27 04:12:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:12:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 04:12:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:56,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:12:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:12:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:12:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:12:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:56,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:12:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:57,157 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-27 04:12:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:12:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:12:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 04:12:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:12:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:12:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,085 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 32 [2020-10-27 04:12:58,519 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2020-10-27 04:12:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:12:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:12:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:12:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:12:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:12:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:12:58,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:12:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 04:12:58,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287120533] [2020-10-27 04:12:58,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:58,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 04:12:58,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324713991] [2020-10-27 04:12:58,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 04:12:58,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:58,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 04:12:58,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:12:58,861 INFO L87 Difference]: Start difference. First operand 3790 states and 6312 transitions. Second operand 34 states. [2020-10-27 04:13:00,538 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:13:00,871 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 04:13:01,529 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-10-27 04:13:01,857 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-27 04:13:02,210 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-10-27 04:13:02,561 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-27 04:13:02,902 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-27 04:13:03,093 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-27 04:13:03,459 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-27 04:13:03,883 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-27 04:13:04,284 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 04:13:05,181 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 04:13:05,850 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 95