/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/array-examples/relax-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:27:07,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:27:07,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:27:07,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:27:07,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:27:07,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:27:07,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:27:07,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:27:07,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:27:07,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:27:07,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:27:07,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:27:07,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:27:07,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:27:07,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:27:07,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:27:07,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:27:07,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:27:07,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:27:07,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:27:07,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:27:07,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:27:07,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:27:07,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:27:07,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:27:07,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:27:07,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:27:07,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:27:07,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:27:07,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:27:07,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:27:07,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:27:07,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:27:07,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:27:07,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:27:07,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:27:07,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:27:07,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:27:07,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:27:07,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:27:07,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:27:07,755 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 [2020-10-29 03:27:07,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:27:07,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:27:07,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:27:07,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:27:07,783 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:27:07,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:27:07,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:27:07,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:27:07,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:27:07,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:27:07,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:27:07,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:27:07,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:27:07,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:27:07,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:27:07,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:27:07,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:27:07,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:27:07,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:27:07,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:27:07,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:27:07,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:27:07,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:27:07,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:27:07,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:27:07,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:27:07,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:27:07,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:27:07,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:27:07,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:27:08,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:27:08,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:27:08,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:27:08,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:27:08,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:27:08,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.i [2020-10-29 03:27:08,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9320199/d0e08679bd4d42d481a3474021a3e497/FLAGcda8ffd8d [2020-10-29 03:27:08,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:27:08,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/relax-2.i [2020-10-29 03:27:08,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9320199/d0e08679bd4d42d481a3474021a3e497/FLAGcda8ffd8d [2020-10-29 03:27:09,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9320199/d0e08679bd4d42d481a3474021a3e497 [2020-10-29 03:27:09,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:27:09,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:27:09,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:27:09,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:27:09,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:27:09,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d13a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09, skipping insertion in model container [2020-10-29 03:27:09,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:27:09,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:27:09,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:27:09,629 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:27:09,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:27:09,757 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:27:09,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09 WrapperNode [2020-10-29 03:27:09,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:27:09,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:27:09,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:27:09,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:27:09,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (1/1) ... [2020-10-29 03:27:09,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:27:09,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:27:09,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:27:09,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:27:09,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (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 [2020-10-29 03:27:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:27:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 03:27:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2020-10-29 03:27:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:27:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-29 03:27:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:27:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:27:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:27:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:27:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 03:27:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 03:27:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 03:27:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 03:27:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 03:27:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 03:27:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 03:27:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 03:27:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 03:27:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 03:27:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 03:27:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 03:27:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 03:27:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 03:27:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 03:27:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 03:27:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 03:27:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 03:27:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 03:27:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:27:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:27:10,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:27:10,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:27:10,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:27:10,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:27:10,788 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 03:27:10,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:27:10 BoogieIcfgContainer [2020-10-29 03:27:10,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:27:10,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:27:10,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:27:10,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:27:10,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:27:09" (1/3) ... [2020-10-29 03:27:10,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2339ae8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:27:10, skipping insertion in model container [2020-10-29 03:27:10,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:27:09" (2/3) ... [2020-10-29 03:27:10,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2339ae8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:27:10, skipping insertion in model container [2020-10-29 03:27:10,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:27:10" (3/3) ... [2020-10-29 03:27:10,800 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-2.i [2020-10-29 03:27:10,812 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:27:10,818 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:27:10,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:27:10,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:27:10,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:27:10,862 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:27:10,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:27:10,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:27:10,863 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:27:10,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:27:10,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:27:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-29 03:27:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:27:10,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:10,893 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] [2020-10-29 03:27:10,893 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash -900021425, now seen corresponding path program 1 times [2020-10-29 03:27:10,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:10,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969532019] [2020-10-29 03:27:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:11,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:27:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-29 03:27:13,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:13,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:27:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:27:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 03:27:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:13,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:27:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 03:27:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 03:27:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:13,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:13,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969532019] [2020-10-29 03:27:13,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:13,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 03:27:13,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269946285] [2020-10-29 03:27:13,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:27:13,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:13,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:27:13,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:13,423 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-10-29 03:27:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:14,213 INFO L93 Difference]: Finished difference Result 138 states and 215 transitions. [2020-10-29 03:27:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:27:14,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-29 03:27:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:14,226 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:27:14,226 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:27:14,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:27:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:27:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-29 03:27:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 03:27:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2020-10-29 03:27:14,282 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 21 [2020-10-29 03:27:14,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:14,284 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2020-10-29 03:27:14,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:27:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2020-10-29 03:27:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:27:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:14,287 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] [2020-10-29 03:27:14,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:27:14,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -436856467, now seen corresponding path program 1 times [2020-10-29 03:27:14,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919648718] [2020-10-29 03:27:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:27:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-29 03:27:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:27:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:16,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:16,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:27:16,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:16,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:27:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 03:27:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 03:27:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:16,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:16,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919648718] [2020-10-29 03:27:16,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:16,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:16,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003397397] [2020-10-29 03:27:16,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:16,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:16,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:16,413 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 10 states. [2020-10-29 03:27:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:17,797 INFO L93 Difference]: Finished difference Result 147 states and 203 transitions. [2020-10-29 03:27:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:27:17,798 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-29 03:27:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:17,801 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:27:17,801 INFO L226 Difference]: Without dead ends: 143 [2020-10-29 03:27:17,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:27:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-29 03:27:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 75. [2020-10-29 03:27:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:27:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2020-10-29 03:27:17,824 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 23 [2020-10-29 03:27:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:17,824 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2020-10-29 03:27:17,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2020-10-29 03:27:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:27:17,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:17,826 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] [2020-10-29 03:27:17,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:27:17,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash 405151505, now seen corresponding path program 1 times [2020-10-29 03:27:17,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:17,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588499228] [2020-10-29 03:27:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:18,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:18,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:27:18,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-29 03:27:18,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:18,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:27:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:27:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:27:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:27:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:18,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:18,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:18,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:27:18,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:18,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 03:27:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:18,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:27:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:18,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:18,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588499228] [2020-10-29 03:27:18,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:18,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:27:18,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075260606] [2020-10-29 03:27:18,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:27:18,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:18,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:27:18,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:27:18,653 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand 8 states. [2020-10-29 03:27:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:19,417 INFO L93 Difference]: Finished difference Result 139 states and 188 transitions. [2020-10-29 03:27:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:27:19,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 03:27:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:19,423 INFO L225 Difference]: With dead ends: 139 [2020-10-29 03:27:19,423 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:27:19,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:27:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2020-10-29 03:27:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:27:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2020-10-29 03:27:19,439 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 24 [2020-10-29 03:27:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:19,440 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2020-10-29 03:27:19,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:27:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2020-10-29 03:27:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:27:19,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:19,445 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] [2020-10-29 03:27:19,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:27:19,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash -580345909, now seen corresponding path program 1 times [2020-10-29 03:27:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161889138] [2020-10-29 03:27:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:21,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:27:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:27:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:22,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:22,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:22,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 03:27:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:22,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:22,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161889138] [2020-10-29 03:27:22,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:22,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:27:22,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092745602] [2020-10-29 03:27:22,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:27:22,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:27:22,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:27:22,239 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand 11 states. [2020-10-29 03:27:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:24,043 INFO L93 Difference]: Finished difference Result 172 states and 241 transitions. [2020-10-29 03:27:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:27:24,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-29 03:27:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:24,050 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:27:24,050 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 03:27:24,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:27:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 03:27:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 90. [2020-10-29 03:27:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:27:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2020-10-29 03:27:24,092 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 25 [2020-10-29 03:27:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:24,092 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2020-10-29 03:27:24,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:27:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2020-10-29 03:27:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:27:24,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:24,097 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] [2020-10-29 03:27:24,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:27:24,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:24,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2011930613, now seen corresponding path program 2 times [2020-10-29 03:27:24,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:24,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504904258] [2020-10-29 03:27:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:27:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:27:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:27:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:27:24,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:27:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:27:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:27:24,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504904258] [2020-10-29 03:27:24,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:24,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:27:24,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452645219] [2020-10-29 03:27:24,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:27:24,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:24,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:27:24,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:27:24,326 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand 5 states. [2020-10-29 03:27:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:24,652 INFO L93 Difference]: Finished difference Result 130 states and 178 transitions. [2020-10-29 03:27:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:27:24,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-29 03:27:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:24,655 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:27:24,655 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:27:24,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:27:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-29 03:27:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:27:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2020-10-29 03:27:24,675 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 25 [2020-10-29 03:27:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:24,676 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2020-10-29 03:27:24,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:27:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2020-10-29 03:27:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:27:24,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:24,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:24,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:27:24,678 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash 191524070, now seen corresponding path program 1 times [2020-10-29 03:27:24,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:24,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161617253] [2020-10-29 03:27:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:27:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:27:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:25,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:25,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 03:27:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:25,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:27:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:25,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161617253] [2020-10-29 03:27:25,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:25,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:27:25,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442614011] [2020-10-29 03:27:25,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:25,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:25,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:25,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:25,283 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand 6 states. [2020-10-29 03:27:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:25,798 INFO L93 Difference]: Finished difference Result 129 states and 180 transitions. [2020-10-29 03:27:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:27:25,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-29 03:27:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:25,801 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:27:25,801 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:27:25,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:27:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:27:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2020-10-29 03:27:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:27:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions. [2020-10-29 03:27:25,830 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 26 [2020-10-29 03:27:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:25,831 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions. [2020-10-29 03:27:25,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions. [2020-10-29 03:27:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:27:25,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:25,833 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] [2020-10-29 03:27:25,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:27:25,834 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash -101878937, now seen corresponding path program 1 times [2020-10-29 03:27:25,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:25,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483204821] [2020-10-29 03:27:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:27:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 03:27:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:25,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:27:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:27:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:27:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 03:27:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:27:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:26,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483204821] [2020-10-29 03:27:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:26,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:27:26,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370845882] [2020-10-29 03:27:26,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:27:26,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:26,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:27:26,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:27:26,073 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand 5 states. [2020-10-29 03:27:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:26,381 INFO L93 Difference]: Finished difference Result 124 states and 169 transitions. [2020-10-29 03:27:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:27:26,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-29 03:27:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:26,384 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:27:26,384 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 03:27:26,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 03:27:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-29 03:27:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:27:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 140 transitions. [2020-10-29 03:27:26,412 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 140 transitions. Word has length 26 [2020-10-29 03:27:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:26,413 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 140 transitions. [2020-10-29 03:27:26,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:27:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 140 transitions. [2020-10-29 03:27:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:27:26,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:26,416 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] [2020-10-29 03:27:26,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:27:26,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1862839181, now seen corresponding path program 1 times [2020-10-29 03:27:26,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:26,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109998792] [2020-10-29 03:27:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:26,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:27:26,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-29 03:27:26,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:26,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:27:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:27:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:26,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:26,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 03:27:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:26,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:27:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:27:27,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109998792] [2020-10-29 03:27:27,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:27,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 03:27:27,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593730756] [2020-10-29 03:27:27,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:27:27,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:27,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:27:27,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:27,049 INFO L87 Difference]: Start difference. First operand 103 states and 140 transitions. Second operand 7 states. [2020-10-29 03:27:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:27,540 INFO L93 Difference]: Finished difference Result 116 states and 156 transitions. [2020-10-29 03:27:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:27:27,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-29 03:27:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:27,543 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:27:27,543 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:27:27,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:27:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-29 03:27:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:27:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-10-29 03:27:27,564 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 26 [2020-10-29 03:27:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:27,565 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-10-29 03:27:27,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:27:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-10-29 03:27:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:27:27,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:27,567 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] [2020-10-29 03:27:27,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:27:27,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:27,568 INFO L82 PathProgramCache]: Analyzing trace with hash -245162891, now seen corresponding path program 1 times [2020-10-29 03:27:27,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:27,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275097421] [2020-10-29 03:27:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:27:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:27:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2503 [2020-10-29 03:27:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:30,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:27:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:27:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:27:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:30,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:27:30,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:27:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:30,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:27:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:27:30,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275097421] [2020-10-29 03:27:30,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:30,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:27:30,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798420833] [2020-10-29 03:27:30,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:27:30,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:27:30,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:27:30,331 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 8 states. [2020-10-29 03:27:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:31,019 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2020-10-29 03:27:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:27:31,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 03:27:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:31,021 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:27:31,021 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:27:31,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:27:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:27:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-10-29 03:27:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:27:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-10-29 03:27:31,032 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 27 [2020-10-29 03:27:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:31,032 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-10-29 03:27:31,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:27:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-10-29 03:27:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:27:31,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:31,033 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] [2020-10-29 03:27:31,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:27:31,033 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2099657978, now seen corresponding path program 1 times [2020-10-29 03:27:31,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:31,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952510243] [2020-10-29 03:27:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:27:31,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:31,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 03:27:31,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:27:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:31,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:31,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 03:27:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:31,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:27:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:27:31,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952510243] [2020-10-29 03:27:31,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:31,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:27:31,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923365309] [2020-10-29 03:27:31,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:27:31,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:27:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:27:31,192 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 4 states. [2020-10-29 03:27:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:31,449 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2020-10-29 03:27:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:27:31,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-29 03:27:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:31,452 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:27:31,452 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:27:31,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:27:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:27:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-10-29 03:27:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:27:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-10-29 03:27:31,462 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 28 [2020-10-29 03:27:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:31,462 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-10-29 03:27:31,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:27:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-10-29 03:27:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:27:31,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:31,463 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] [2020-10-29 03:27:31,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:27:31,464 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash 140946067, now seen corresponding path program 1 times [2020-10-29 03:27:31,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:31,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322063854] [2020-10-29 03:27:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:27:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:27:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:27:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:32,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:27:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:32,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:27:32,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322063854] [2020-10-29 03:27:32,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:32,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:27:32,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516056449] [2020-10-29 03:27:32,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:32,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:32,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:32,951 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 6 states. [2020-10-29 03:27:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:33,476 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2020-10-29 03:27:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:27:33,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 03:27:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:33,481 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:27:33,481 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:27:33,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:27:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:27:33,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2020-10-29 03:27:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:27:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2020-10-29 03:27:33,496 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 28 [2020-10-29 03:27:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:33,497 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2020-10-29 03:27:33,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2020-10-29 03:27:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:27:33,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:33,499 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] [2020-10-29 03:27:33,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:27:33,499 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1915953429, now seen corresponding path program 1 times [2020-10-29 03:27:33,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:33,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525222402] [2020-10-29 03:27:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:27:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:34,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:34,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:34,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:27:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:34,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:27:34,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525222402] [2020-10-29 03:27:34,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:34,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:27:34,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463627743] [2020-10-29 03:27:34,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:34,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:34,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:34,870 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 6 states. [2020-10-29 03:27:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:35,296 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2020-10-29 03:27:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:27:35,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 03:27:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:35,298 INFO L225 Difference]: With dead ends: 117 [2020-10-29 03:27:35,298 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 03:27:35,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 03:27:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2020-10-29 03:27:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:27:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-10-29 03:27:35,309 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 28 [2020-10-29 03:27:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:35,310 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-10-29 03:27:35,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-10-29 03:27:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:27:35,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:35,311 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] [2020-10-29 03:27:35,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:27:35,311 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash -496204481, now seen corresponding path program 1 times [2020-10-29 03:27:35,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:35,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902209698] [2020-10-29 03:27:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:37,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:27:37,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:27:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:27:37,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 03:27:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:37,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:27:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:37,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902209698] [2020-10-29 03:27:37,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:37,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:27:37,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22411442] [2020-10-29 03:27:37,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:27:37,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:27:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:27:37,554 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 9 states. [2020-10-29 03:27:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:38,488 INFO L93 Difference]: Finished difference Result 169 states and 225 transitions. [2020-10-29 03:27:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:27:38,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-29 03:27:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:38,491 INFO L225 Difference]: With dead ends: 169 [2020-10-29 03:27:38,491 INFO L226 Difference]: Without dead ends: 133 [2020-10-29 03:27:38,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:27:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-29 03:27:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 102. [2020-10-29 03:27:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:27:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-10-29 03:27:38,507 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 29 [2020-10-29 03:27:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:38,508 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-10-29 03:27:38,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:27:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-10-29 03:27:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:27:38,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:38,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:38,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:27:38,509 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1060954669, now seen corresponding path program 1 times [2020-10-29 03:27:38,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:38,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973950430] [2020-10-29 03:27:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:39,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:27:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:27:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:27:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:39,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:39,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:39,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:39,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:39,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:39,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:27:39,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:39,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:27:39,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973950430] [2020-10-29 03:27:39,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:39,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:27:39,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150956383] [2020-10-29 03:27:39,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:27:39,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:27:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:27:39,569 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 9 states. [2020-10-29 03:27:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:40,497 INFO L93 Difference]: Finished difference Result 177 states and 236 transitions. [2020-10-29 03:27:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:27:40,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 03:27:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:40,501 INFO L225 Difference]: With dead ends: 177 [2020-10-29 03:27:40,501 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:27:40,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:27:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:27:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 108. [2020-10-29 03:27:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:27:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 145 transitions. [2020-10-29 03:27:40,518 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 145 transitions. Word has length 31 [2020-10-29 03:27:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:40,519 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 145 transitions. [2020-10-29 03:27:40,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:27:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 145 transitions. [2020-10-29 03:27:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:27:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:40,520 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] [2020-10-29 03:27:40,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:27:40,520 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1873355427, now seen corresponding path program 2 times [2020-10-29 03:27:40,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:40,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486458614] [2020-10-29 03:27:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:27:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:27:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2935 [2020-10-29 03:27:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:43,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:27:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:43,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:27:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:43,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486458614] [2020-10-29 03:27:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:43,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:27:43,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132844514] [2020-10-29 03:27:43,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:27:43,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:27:43,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:43,706 INFO L87 Difference]: Start difference. First operand 108 states and 145 transitions. Second operand 7 states. [2020-10-29 03:27:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:44,384 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2020-10-29 03:27:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:27:44,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-29 03:27:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:44,388 INFO L225 Difference]: With dead ends: 135 [2020-10-29 03:27:44,388 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:27:44,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:27:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2020-10-29 03:27:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:27:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 138 transitions. [2020-10-29 03:27:44,405 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 138 transitions. Word has length 31 [2020-10-29 03:27:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:44,405 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 138 transitions. [2020-10-29 03:27:44,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:27:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 138 transitions. [2020-10-29 03:27:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:27:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:44,406 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] [2020-10-29 03:27:44,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:27:44,407 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash -404084085, now seen corresponding path program 2 times [2020-10-29 03:27:44,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:44,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062916560] [2020-10-29 03:27:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:27:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:27:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:27:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:45,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:27:45,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062916560] [2020-10-29 03:27:45,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:45,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:45,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409591248] [2020-10-29 03:27:45,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:45,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:45,866 INFO L87 Difference]: Start difference. First operand 104 states and 138 transitions. Second operand 10 states. [2020-10-29 03:27:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:46,939 INFO L93 Difference]: Finished difference Result 219 states and 298 transitions. [2020-10-29 03:27:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:27:46,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-29 03:27:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:46,942 INFO L225 Difference]: With dead ends: 219 [2020-10-29 03:27:46,942 INFO L226 Difference]: Without dead ends: 196 [2020-10-29 03:27:46,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:27:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-29 03:27:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 108. [2020-10-29 03:27:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:27:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-29 03:27:46,975 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 33 [2020-10-29 03:27:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:46,975 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-29 03:27:46,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-29 03:27:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:27:46,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:46,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:46,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:27:46,977 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash 997899107, now seen corresponding path program 1 times [2020-10-29 03:27:46,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:46,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236507923] [2020-10-29 03:27:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:47,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:27:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:27:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:47,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:47,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:47,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:47,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:47,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:27:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:27:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:27:47,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236507923] [2020-10-29 03:27:47,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:47,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:27:47,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096616809] [2020-10-29 03:27:47,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:27:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:27:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:27:47,157 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 4 states. [2020-10-29 03:27:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:47,437 INFO L93 Difference]: Finished difference Result 136 states and 183 transitions. [2020-10-29 03:27:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:27:47,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-29 03:27:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:47,439 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:27:47,439 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:27:47,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:27:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:27:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-29 03:27:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:27:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2020-10-29 03:27:47,461 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 34 [2020-10-29 03:27:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:47,461 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2020-10-29 03:27:47,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:27:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2020-10-29 03:27:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:27:47,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:47,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:47,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:27:47,462 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 442946409, now seen corresponding path program 3 times [2020-10-29 03:27:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:47,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369287007] [2020-10-29 03:27:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:27:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-29 03:27:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:48,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:27:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:27:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:27:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:27:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:49,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:49,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 03:27:49,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:49,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:27:49,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369287007] [2020-10-29 03:27:49,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:49,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:27:49,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887261645] [2020-10-29 03:27:49,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:27:49,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:49,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:27:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:27:49,169 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand 11 states. [2020-10-29 03:27:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:50,517 INFO L93 Difference]: Finished difference Result 268 states and 370 transitions. [2020-10-29 03:27:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:27:50,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 03:27:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:50,524 INFO L225 Difference]: With dead ends: 268 [2020-10-29 03:27:50,524 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 03:27:50,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 03:27:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 113. [2020-10-29 03:27:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:27:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2020-10-29 03:27:50,543 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 35 [2020-10-29 03:27:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:50,544 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2020-10-29 03:27:50,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:27:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2020-10-29 03:27:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:27:50,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:50,545 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:50,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:27:50,545 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1604535097, now seen corresponding path program 4 times [2020-10-29 03:27:50,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273621730] [2020-10-29 03:27:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:27:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:27:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:52,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:27:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:27:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:27:52,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273621730] [2020-10-29 03:27:52,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:52,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769186695] [2020-10-29 03:27:52,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:52,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:52,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:52,431 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand 12 states. [2020-10-29 03:27:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:54,323 INFO L93 Difference]: Finished difference Result 316 states and 441 transitions. [2020-10-29 03:27:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:27:54,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-29 03:27:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:54,327 INFO L225 Difference]: With dead ends: 316 [2020-10-29 03:27:54,327 INFO L226 Difference]: Without dead ends: 293 [2020-10-29 03:27:54,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:27:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-29 03:27:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 117. [2020-10-29 03:27:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:27:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 157 transitions. [2020-10-29 03:27:54,360 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 157 transitions. Word has length 37 [2020-10-29 03:27:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:54,360 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 157 transitions. [2020-10-29 03:27:54,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 157 transitions. [2020-10-29 03:27:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:27:54,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:54,361 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:27:54,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:27:54,361 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash 985791257, now seen corresponding path program 1 times [2020-10-29 03:27:54,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:54,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425634372] [2020-10-29 03:27:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:58,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3683 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:27:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:27:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:58,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:27:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:27:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:27:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:27:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:27:58,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425634372] [2020-10-29 03:27:58,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:58,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:27:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705299344] [2020-10-29 03:27:58,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:27:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:27:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:58,229 INFO L87 Difference]: Start difference. First operand 117 states and 157 transitions. Second operand 7 states. [2020-10-29 03:27:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:58,876 INFO L93 Difference]: Finished difference Result 162 states and 216 transitions. [2020-10-29 03:27:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:27:58,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-29 03:27:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:58,879 INFO L225 Difference]: With dead ends: 162 [2020-10-29 03:27:58,879 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:27:58,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:27:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:27:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 117. [2020-10-29 03:27:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:27:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 156 transitions. [2020-10-29 03:27:58,898 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 156 transitions. Word has length 39 [2020-10-29 03:27:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:58,898 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 156 transitions. [2020-10-29 03:27:58,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:27:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 156 transitions. [2020-10-29 03:27:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:27:58,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:58,899 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] [2020-10-29 03:27:58,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:27:58,899 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:58,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1073528788, now seen corresponding path program 1 times [2020-10-29 03:27:58,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:58,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171253990] [2020-10-29 03:27:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:03,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:28:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:28:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:28:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:04,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:04,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:04,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:28:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:04,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:28:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:04,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171253990] [2020-10-29 03:28:04,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:04,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:28:04,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535827737] [2020-10-29 03:28:04,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:28:04,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:04,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:28:04,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:28:04,252 INFO L87 Difference]: Start difference. First operand 117 states and 156 transitions. Second operand 10 states. [2020-10-29 03:28:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:05,381 INFO L93 Difference]: Finished difference Result 221 states and 301 transitions. [2020-10-29 03:28:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:28:05,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-29 03:28:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:05,384 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:28:05,384 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:28:05,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:28:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:28:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2020-10-29 03:28:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:28:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2020-10-29 03:28:05,412 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 38 [2020-10-29 03:28:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:05,413 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2020-10-29 03:28:05,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:28:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2020-10-29 03:28:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:28:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:05,414 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:05,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:28:05,414 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2139240795, now seen corresponding path program 5 times [2020-10-29 03:28:05,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:05,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772620462] [2020-10-29 03:28:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:28:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:07,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:28:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:28:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:28:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:07,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772620462] [2020-10-29 03:28:07,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:07,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:28:07,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077965613] [2020-10-29 03:28:07,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:28:07,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:28:07,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:28:07,491 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand 13 states. [2020-10-29 03:28:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:09,742 INFO L93 Difference]: Finished difference Result 362 states and 515 transitions. [2020-10-29 03:28:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:28:09,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-29 03:28:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:09,748 INFO L225 Difference]: With dead ends: 362 [2020-10-29 03:28:09,748 INFO L226 Difference]: Without dead ends: 339 [2020-10-29 03:28:09,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:28:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-29 03:28:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 135. [2020-10-29 03:28:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:28:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2020-10-29 03:28:09,775 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 39 [2020-10-29 03:28:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:09,776 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2020-10-29 03:28:09,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:28:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2020-10-29 03:28:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:28:09,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:09,777 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] [2020-10-29 03:28:09,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:28:09,777 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:09,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2023851285, now seen corresponding path program 1 times [2020-10-29 03:28:09,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:09,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033818189] [2020-10-29 03:28:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:09,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:28:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:28:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:10,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:10,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:28:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:10,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:28:10,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033818189] [2020-10-29 03:28:10,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:10,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:28:10,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912972238] [2020-10-29 03:28:10,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:28:10,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:28:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:28:10,120 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand 8 states. [2020-10-29 03:28:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:10,773 INFO L93 Difference]: Finished difference Result 182 states and 251 transitions. [2020-10-29 03:28:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:28:10,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 03:28:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:10,775 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:28:10,775 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:28:10,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:28:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:28:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2020-10-29 03:28:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 03:28:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2020-10-29 03:28:10,801 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 39 [2020-10-29 03:28:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:10,801 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2020-10-29 03:28:10,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:28:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2020-10-29 03:28:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:28:10,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:10,803 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] [2020-10-29 03:28:10,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:28:10,803 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1878089001, now seen corresponding path program 1 times [2020-10-29 03:28:10,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:10,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720720961] [2020-10-29 03:28:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:28:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:28:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:28:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:11,294 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-29 03:28:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:11,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:28:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:28:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:28:11,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720720961] [2020-10-29 03:28:11,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:11,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:28:11,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720589790] [2020-10-29 03:28:11,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:28:11,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:11,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:28:11,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:28:11,609 INFO L87 Difference]: Start difference. First operand 159 states and 222 transitions. Second operand 10 states. [2020-10-29 03:28:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:12,962 INFO L93 Difference]: Finished difference Result 280 states and 404 transitions. [2020-10-29 03:28:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:28:12,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-29 03:28:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:12,965 INFO L225 Difference]: With dead ends: 280 [2020-10-29 03:28:12,965 INFO L226 Difference]: Without dead ends: 235 [2020-10-29 03:28:12,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:28:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-29 03:28:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 180. [2020-10-29 03:28:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-29 03:28:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 251 transitions. [2020-10-29 03:28:12,996 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 251 transitions. Word has length 39 [2020-10-29 03:28:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:12,996 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 251 transitions. [2020-10-29 03:28:12,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:28:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 251 transitions. [2020-10-29 03:28:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:28:12,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:12,998 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:28:12,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:28:12,998 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash -469536242, now seen corresponding path program 2 times [2020-10-29 03:28:12,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:12,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511416007] [2020-10-29 03:28:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:28:15,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:28:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2741 [2020-10-29 03:28:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:15,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:28:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:15,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:28:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:28:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:28:16,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511416007] [2020-10-29 03:28:16,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:16,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:28:16,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180723680] [2020-10-29 03:28:16,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:28:16,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:16,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:28:16,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:28:16,238 INFO L87 Difference]: Start difference. First operand 180 states and 251 transitions. Second operand 10 states. [2020-10-29 03:28:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:17,532 INFO L93 Difference]: Finished difference Result 298 states and 420 transitions. [2020-10-29 03:28:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:28:17,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-29 03:28:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:17,536 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:28:17,536 INFO L226 Difference]: Without dead ends: 286 [2020-10-29 03:28:17,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:28:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-29 03:28:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 197. [2020-10-29 03:28:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:28:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 271 transitions. [2020-10-29 03:28:17,572 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 271 transitions. Word has length 40 [2020-10-29 03:28:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:17,572 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 271 transitions. [2020-10-29 03:28:17,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:28:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 271 transitions. [2020-10-29 03:28:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:28:17,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:17,574 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:17,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:28:17,574 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash -595341053, now seen corresponding path program 6 times [2020-10-29 03:28:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:17,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869241924] [2020-10-29 03:28:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:18,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:28:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:28:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:28:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:28:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 03:28:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:28:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:28:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:28:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:19,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869241924] [2020-10-29 03:28:19,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:19,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:28:19,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289648898] [2020-10-29 03:28:19,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:28:19,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:19,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:28:19,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:28:19,364 INFO L87 Difference]: Start difference. First operand 197 states and 271 transitions. Second operand 14 states. [2020-10-29 03:28:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:22,093 INFO L93 Difference]: Finished difference Result 740 states and 1052 transitions. [2020-10-29 03:28:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:28:22,094 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-29 03:28:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:22,102 INFO L225 Difference]: With dead ends: 740 [2020-10-29 03:28:22,103 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 03:28:22,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:28:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 03:28:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 201. [2020-10-29 03:28:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 03:28:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 277 transitions. [2020-10-29 03:28:22,146 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 277 transitions. Word has length 41 [2020-10-29 03:28:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:22,147 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 277 transitions. [2020-10-29 03:28:22,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:28:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 277 transitions. [2020-10-29 03:28:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:28:22,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:22,149 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:28:22,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:28:22,149 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1036950611, now seen corresponding path program 2 times [2020-10-29 03:28:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502359220] [2020-10-29 03:28:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:27,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:28:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:27,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:27,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:27,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:28:27,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:27,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:28:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 03:28:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 03:28:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:27,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:28:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:28:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:28:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:27,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502359220] [2020-10-29 03:28:27,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:27,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:28:27,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604411219] [2020-10-29 03:28:27,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:28:27,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:28:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:28:27,571 INFO L87 Difference]: Start difference. First operand 201 states and 277 transitions. Second operand 10 states. [2020-10-29 03:28:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:28,966 INFO L93 Difference]: Finished difference Result 369 states and 524 transitions. [2020-10-29 03:28:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:28:28,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 03:28:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:28,971 INFO L225 Difference]: With dead ends: 369 [2020-10-29 03:28:28,971 INFO L226 Difference]: Without dead ends: 333 [2020-10-29 03:28:28,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:28:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-29 03:28:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 228. [2020-10-29 03:28:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-29 03:28:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2020-10-29 03:28:29,019 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 42 [2020-10-29 03:28:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:29,020 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2020-10-29 03:28:29,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:28:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2020-10-29 03:28:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:28:29,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:29,022 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:28:29,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:28:29,022 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:29,022 INFO L82 PathProgramCache]: Analyzing trace with hash -925981486, now seen corresponding path program 1 times [2020-10-29 03:28:29,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:29,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406784737] [2020-10-29 03:28:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:29,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3502 [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:28:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:28:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:32,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:32,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:32,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:32,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:32,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:28:32,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:28:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:32,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:32,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:28:32,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 03:28:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:32,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:28:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:28:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:28:32,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406784737] [2020-10-29 03:28:32,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:32,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:28:32,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893178099] [2020-10-29 03:28:32,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:28:32,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:32,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:28:32,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:28:32,876 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand 8 states. [2020-10-29 03:28:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:33,527 INFO L93 Difference]: Finished difference Result 270 states and 376 transitions. [2020-10-29 03:28:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:28:33,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-29 03:28:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:33,530 INFO L225 Difference]: With dead ends: 270 [2020-10-29 03:28:33,530 INFO L226 Difference]: Without dead ends: 235 [2020-10-29 03:28:33,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:28:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-29 03:28:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2020-10-29 03:28:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 03:28:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 319 transitions. [2020-10-29 03:28:33,577 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 319 transitions. Word has length 43 [2020-10-29 03:28:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:33,577 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 319 transitions. [2020-10-29 03:28:33,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:28:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 319 transitions. [2020-10-29 03:28:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:28:33,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:33,580 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:33,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:28:33,582 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:33,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1328593889, now seen corresponding path program 7 times [2020-10-29 03:28:33,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:33,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499421602] [2020-10-29 03:28:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:35,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:35,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:28:35,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:28:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:28:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:35,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:35,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:28:35,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:35,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:28:35,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:35,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499421602] [2020-10-29 03:28:35,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:35,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:28:35,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792477725] [2020-10-29 03:28:35,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:28:35,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:35,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:28:35,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:28:35,771 INFO L87 Difference]: Start difference. First operand 231 states and 319 transitions. Second operand 15 states. [2020-10-29 03:28:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:41,374 INFO L93 Difference]: Finished difference Result 880 states and 1264 transitions. [2020-10-29 03:28:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:28:41,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-29 03:28:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:41,380 INFO L225 Difference]: With dead ends: 880 [2020-10-29 03:28:41,380 INFO L226 Difference]: Without dead ends: 828 [2020-10-29 03:28:41,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:28:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-29 03:28:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 237. [2020-10-29 03:28:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 03:28:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 327 transitions. [2020-10-29 03:28:41,434 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 327 transitions. Word has length 43 [2020-10-29 03:28:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:41,434 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 327 transitions. [2020-10-29 03:28:41,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:28:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 327 transitions. [2020-10-29 03:28:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:28:41,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:41,436 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] [2020-10-29 03:28:41,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:28:41,436 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1318001419, now seen corresponding path program 3 times [2020-10-29 03:28:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303408641] [2020-10-29 03:28:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:46,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:46,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:28:46,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:28:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:28:46,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:46,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:28:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:28:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:28:46,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:46,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:28:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:46,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:46,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 03:28:46,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 03:28:46,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:46,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:28:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:28:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:28:46,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303408641] [2020-10-29 03:28:46,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:46,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:28:46,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408183133] [2020-10-29 03:28:46,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:28:46,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:46,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:28:46,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:28:46,743 INFO L87 Difference]: Start difference. First operand 237 states and 327 transitions. Second operand 8 states. [2020-10-29 03:28:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:47,576 INFO L93 Difference]: Finished difference Result 279 states and 381 transitions. [2020-10-29 03:28:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:28:47,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 03:28:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:47,579 INFO L225 Difference]: With dead ends: 279 [2020-10-29 03:28:47,579 INFO L226 Difference]: Without dead ends: 257 [2020-10-29 03:28:47,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:28:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-29 03:28:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 234. [2020-10-29 03:28:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 03:28:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 321 transitions. [2020-10-29 03:28:47,639 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 321 transitions. Word has length 44 [2020-10-29 03:28:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:47,639 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 321 transitions. [2020-10-29 03:28:47,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:28:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 321 transitions. [2020-10-29 03:28:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:28:47,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:47,644 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:47,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:28:47,645 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash -900831425, now seen corresponding path program 8 times [2020-10-29 03:28:47,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:47,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963957797] [2020-10-29 03:28:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:28:49,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-29 03:28:49,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:49,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:28:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:28:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:28:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:49,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:49,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:28:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:28:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:28:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:28:49,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963957797] [2020-10-29 03:28:49,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:49,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:28:49,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848298939] [2020-10-29 03:28:49,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:28:49,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:49,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:28:49,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:28:49,933 INFO L87 Difference]: Start difference. First operand 234 states and 321 transitions. Second operand 16 states. [2020-10-29 03:28:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:56,113 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2020-10-29 03:28:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:28:56,114 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:28:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:56,119 INFO L225 Difference]: With dead ends: 964 [2020-10-29 03:28:56,119 INFO L226 Difference]: Without dead ends: 912 [2020-10-29 03:28:56,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:28:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-29 03:28:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 240. [2020-10-29 03:28:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-29 03:28:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 329 transitions. [2020-10-29 03:28:56,180 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 329 transitions. Word has length 45 [2020-10-29 03:28:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:56,180 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 329 transitions. [2020-10-29 03:28:56,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:28:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 329 transitions. [2020-10-29 03:28:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:28:56,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:56,182 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:28:56,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:28:56,182 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:56,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2012500189, now seen corresponding path program 1 times [2020-10-29 03:28:56,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:56,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102713345] [2020-10-29 03:28:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:29:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-29 03:29:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:29:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:01,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:29:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 03:29:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:29:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:29:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:01,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:29:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:29:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:29:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:29:01,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102713345] [2020-10-29 03:29:01,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:01,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:29:01,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707219325] [2020-10-29 03:29:01,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:29:01,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:01,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:29:01,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:29:01,529 INFO L87 Difference]: Start difference. First operand 240 states and 329 transitions. Second operand 8 states. [2020-10-29 03:29:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:02,403 INFO L93 Difference]: Finished difference Result 291 states and 397 transitions. [2020-10-29 03:29:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:29:02,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-29 03:29:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:02,405 INFO L225 Difference]: With dead ends: 291 [2020-10-29 03:29:02,405 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 03:29:02,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:29:02,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 03:29:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 245. [2020-10-29 03:29:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:29:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2020-10-29 03:29:02,458 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 46 [2020-10-29 03:29:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:02,459 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2020-10-29 03:29:02,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:29:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2020-10-29 03:29:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:29:02,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:02,461 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:29:02,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:29:02,461 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash -915050384, now seen corresponding path program 2 times [2020-10-29 03:29:02,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:02,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122840334] [2020-10-29 03:29:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:29:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:29:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:29:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:29:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:29:03,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:29:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122840334] [2020-10-29 03:29:03,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:03,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:29:03,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505494253] [2020-10-29 03:29:03,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:29:03,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:03,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:29:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:29:03,591 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand 14 states. [2020-10-29 03:29:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:05,398 INFO L93 Difference]: Finished difference Result 383 states and 529 transitions. [2020-10-29 03:29:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:29:05,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-29 03:29:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:05,401 INFO L225 Difference]: With dead ends: 383 [2020-10-29 03:29:05,401 INFO L226 Difference]: Without dead ends: 287 [2020-10-29 03:29:05,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:29:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-29 03:29:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 263. [2020-10-29 03:29:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 03:29:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 356 transitions. [2020-10-29 03:29:05,459 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 356 transitions. Word has length 45 [2020-10-29 03:29:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:05,459 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 356 transitions. [2020-10-29 03:29:05,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:29:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 356 transitions. [2020-10-29 03:29:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:29:05,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:05,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 03:29:05,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:29:05,461 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1763785385, now seen corresponding path program 4 times [2020-10-29 03:29:05,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:05,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683651865] [2020-10-29 03:29:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:05,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:29:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:29:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:29:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:12,738 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-10-29 03:29:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:13,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:13,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:13,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:13,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:29:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:29:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:29:15,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683651865] [2020-10-29 03:29:15,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:15,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:29:15,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561745153] [2020-10-29 03:29:15,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:29:15,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:15,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:29:15,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=69, Unknown=1, NotChecked=0, Total=90 [2020-10-29 03:29:15,636 INFO L87 Difference]: Start difference. First operand 263 states and 356 transitions. Second operand 10 states. [2020-10-29 03:29:27,513 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 55 [2020-10-29 03:29:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:29,024 INFO L93 Difference]: Finished difference Result 320 states and 431 transitions. [2020-10-29 03:29:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:29:29,025 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-29 03:29:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:29,028 INFO L225 Difference]: With dead ends: 320 [2020-10-29 03:29:29,028 INFO L226 Difference]: Without dead ends: 296 [2020-10-29 03:29:29,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=65, Invalid=206, Unknown=1, NotChecked=0, Total=272 [2020-10-29 03:29:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-29 03:29:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2020-10-29 03:29:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-29 03:29:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 354 transitions. [2020-10-29 03:29:29,089 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 354 transitions. Word has length 46 [2020-10-29 03:29:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:29,090 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 354 transitions. [2020-10-29 03:29:29,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:29:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 354 transitions. [2020-10-29 03:29:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:29:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:29,092 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:29:29,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:29:29,092 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:29,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:29,094 INFO L82 PathProgramCache]: Analyzing trace with hash -189877475, now seen corresponding path program 9 times [2020-10-29 03:29:29,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:29,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899518666] [2020-10-29 03:29:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:29:31,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:29:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:31,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:31,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:29:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:29:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:29:31,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899518666] [2020-10-29 03:29:31,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:31,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:29:31,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256359546] [2020-10-29 03:29:31,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:29:31,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:29:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:29:31,873 INFO L87 Difference]: Start difference. First operand 262 states and 354 transitions. Second operand 17 states. [2020-10-29 03:29:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:40,801 INFO L93 Difference]: Finished difference Result 1242 states and 1724 transitions. [2020-10-29 03:29:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:29:40,803 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-29 03:29:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:40,809 INFO L225 Difference]: With dead ends: 1242 [2020-10-29 03:29:40,809 INFO L226 Difference]: Without dead ends: 1190 [2020-10-29 03:29:40,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:29:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2020-10-29 03:29:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 268. [2020-10-29 03:29:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-29 03:29:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 362 transitions. [2020-10-29 03:29:40,881 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 362 transitions. Word has length 47 [2020-10-29 03:29:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:40,881 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 362 transitions. [2020-10-29 03:29:40,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:29:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 362 transitions. [2020-10-29 03:29:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:29:40,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:40,883 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] [2020-10-29 03:29:40,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:29:40,883 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash -382176306, now seen corresponding path program 1 times [2020-10-29 03:29:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:40,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894835016] [2020-10-29 03:29:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:41,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:29:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:29:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:41,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:29:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:29:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894835016] [2020-10-29 03:29:41,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:41,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:29:41,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892165617] [2020-10-29 03:29:41,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:29:41,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:29:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:29:41,364 INFO L87 Difference]: Start difference. First operand 268 states and 362 transitions. Second operand 9 states. [2020-10-29 03:29:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:42,172 INFO L93 Difference]: Finished difference Result 301 states and 404 transitions. [2020-10-29 03:29:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:29:42,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-29 03:29:42,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:42,174 INFO L225 Difference]: With dead ends: 301 [2020-10-29 03:29:42,174 INFO L226 Difference]: Without dead ends: 290 [2020-10-29 03:29:42,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:29:42,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-29 03:29:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 277. [2020-10-29 03:29:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 03:29:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 374 transitions. [2020-10-29 03:29:42,240 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 374 transitions. Word has length 47 [2020-10-29 03:29:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:42,241 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 374 transitions. [2020-10-29 03:29:42,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:29:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 374 transitions. [2020-10-29 03:29:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:29:42,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:42,243 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:29:42,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:29:42,243 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 903182352, now seen corresponding path program 1 times [2020-10-29 03:29:42,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:42,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789979465] [2020-10-29 03:29:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:47,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:47,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:29:47,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 03:29:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:29:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:47,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:29:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:47,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:47,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:29:47,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:29:47,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:29:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:29:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:29:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:47,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:47,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:29:47,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:29:47,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:29:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:47,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:29:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:47,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:29:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:29:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:29:47,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789979465] [2020-10-29 03:29:47,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:47,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:29:47,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885987151] [2020-10-29 03:29:47,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:29:47,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:47,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:29:47,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:29:47,465 INFO L87 Difference]: Start difference. First operand 277 states and 374 transitions. Second operand 7 states. [2020-10-29 03:29:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:48,176 INFO L93 Difference]: Finished difference Result 332 states and 445 transitions. [2020-10-29 03:29:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:29:48,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-29 03:29:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:48,180 INFO L225 Difference]: With dead ends: 332 [2020-10-29 03:29:48,180 INFO L226 Difference]: Without dead ends: 284 [2020-10-29 03:29:48,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:29:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-29 03:29:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 271. [2020-10-29 03:29:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-29 03:29:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 361 transitions. [2020-10-29 03:29:48,235 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 361 transitions. Word has length 50 [2020-10-29 03:29:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:48,236 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 361 transitions. [2020-10-29 03:29:48,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:29:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 361 transitions. [2020-10-29 03:29:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:29:48,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:48,238 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:29:48,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:29:48,238 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1243368132, now seen corresponding path program 1 times [2020-10-29 03:29:48,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:48,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336222778] [2020-10-29 03:29:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:53,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:29:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:29:53,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:29:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:53,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:29:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:53,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:29:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:29:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:29:53,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336222778] [2020-10-29 03:29:53,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:53,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:29:53,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139828641] [2020-10-29 03:29:53,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:29:53,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:53,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:29:53,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:29:53,718 INFO L87 Difference]: Start difference. First operand 271 states and 361 transitions. Second operand 12 states. [2020-10-29 03:29:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:55,432 INFO L93 Difference]: Finished difference Result 515 states and 717 transitions. [2020-10-29 03:29:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:29:55,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-29 03:29:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:55,437 INFO L225 Difference]: With dead ends: 515 [2020-10-29 03:29:55,437 INFO L226 Difference]: Without dead ends: 394 [2020-10-29 03:29:55,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:29:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-29 03:29:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 292. [2020-10-29 03:29:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-29 03:29:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 400 transitions. [2020-10-29 03:29:55,504 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 400 transitions. Word has length 48 [2020-10-29 03:29:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:55,505 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 400 transitions. [2020-10-29 03:29:55,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:29:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 400 transitions. [2020-10-29 03:29:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:29:55,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:55,507 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:29:55,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:29:55,507 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash 137068411, now seen corresponding path program 10 times [2020-10-29 03:29:55,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:55,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915042143] [2020-10-29 03:29:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:57,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:29:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:29:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:29:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:29:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:58,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:29:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:29:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:29:58,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915042143] [2020-10-29 03:29:58,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:58,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:29:58,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796044537] [2020-10-29 03:29:58,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:29:58,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:29:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:29:58,449 INFO L87 Difference]: Start difference. First operand 292 states and 400 transitions. Second operand 18 states. [2020-10-29 03:30:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:03,383 INFO L93 Difference]: Finished difference Result 1408 states and 1963 transitions. [2020-10-29 03:30:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:30:03,384 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-29 03:30:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:03,391 INFO L225 Difference]: With dead ends: 1408 [2020-10-29 03:30:03,391 INFO L226 Difference]: Without dead ends: 1350 [2020-10-29 03:30:03,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:30:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2020-10-29 03:30:03,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 298. [2020-10-29 03:30:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-29 03:30:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-10-29 03:30:03,472 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 49 [2020-10-29 03:30:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:03,473 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-10-29 03:30:03,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-10-29 03:30:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:30:03,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:03,475 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] [2020-10-29 03:30:03,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:30:03,475 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -362174735, now seen corresponding path program 1 times [2020-10-29 03:30:03,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:03,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594108373] [2020-10-29 03:30:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:03,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:30:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:04,148 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-29 03:30:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:04,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:04,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:04,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:30:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:04,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:04,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:30:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:30:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594108373] [2020-10-29 03:30:04,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:04,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:04,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390297068] [2020-10-29 03:30:04,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:04,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:04,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:04,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:04,547 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 12 states. [2020-10-29 03:30:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:06,627 INFO L93 Difference]: Finished difference Result 458 states and 651 transitions. [2020-10-29 03:30:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:06,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-29 03:30:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:06,630 INFO L225 Difference]: With dead ends: 458 [2020-10-29 03:30:06,630 INFO L226 Difference]: Without dead ends: 404 [2020-10-29 03:30:06,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:30:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-29 03:30:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 326. [2020-10-29 03:30:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-29 03:30:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 447 transitions. [2020-10-29 03:30:06,697 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 447 transitions. Word has length 49 [2020-10-29 03:30:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:06,698 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 447 transitions. [2020-10-29 03:30:06,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 447 transitions. [2020-10-29 03:30:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:30:06,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:06,700 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:30:06,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:30:06,701 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1771894514, now seen corresponding path program 2 times [2020-10-29 03:30:06,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:06,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723263306] [2020-10-29 03:30:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:30:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:30:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:30:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:30:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:30:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:11,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:11,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:30:11,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723263306] [2020-10-29 03:30:11,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:11,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:11,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720389112] [2020-10-29 03:30:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:11,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:11,972 INFO L87 Difference]: Start difference. First operand 326 states and 447 transitions. Second operand 9 states. [2020-10-29 03:30:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:13,270 INFO L93 Difference]: Finished difference Result 404 states and 551 transitions. [2020-10-29 03:30:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:13,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-29 03:30:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:13,275 INFO L225 Difference]: With dead ends: 404 [2020-10-29 03:30:13,275 INFO L226 Difference]: Without dead ends: 345 [2020-10-29 03:30:13,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-29 03:30:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2020-10-29 03:30:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-29 03:30:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2020-10-29 03:30:13,337 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 52 [2020-10-29 03:30:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:13,337 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2020-10-29 03:30:13,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2020-10-29 03:30:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:30:13,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:13,339 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:30:13,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:30:13,339 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:13,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2045109722, now seen corresponding path program 2 times [2020-10-29 03:30:13,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:13,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754022767] [2020-10-29 03:30:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4859 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:30:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:30:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:20,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:30:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:21,253 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-10-29 03:30:23,412 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-29 03:30:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:30:23,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754022767] [2020-10-29 03:30:23,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:23,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:23,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612508829] [2020-10-29 03:30:23,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:23,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:23,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=104, Unknown=1, NotChecked=0, Total=132 [2020-10-29 03:30:23,427 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand 12 states. [2020-10-29 03:30:24,535 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 03:30:37,953 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-29 03:30:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:39,046 INFO L93 Difference]: Finished difference Result 443 states and 613 transitions. [2020-10-29 03:30:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:39,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-29 03:30:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:39,051 INFO L225 Difference]: With dead ends: 443 [2020-10-29 03:30:39,051 INFO L226 Difference]: Without dead ends: 431 [2020-10-29 03:30:39,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=69, Invalid=271, Unknown=2, NotChecked=0, Total=342 [2020-10-29 03:30:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-29 03:30:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 352. [2020-10-29 03:30:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-29 03:30:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 481 transitions. [2020-10-29 03:30:39,146 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 481 transitions. Word has length 50 [2020-10-29 03:30:39,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:39,146 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 481 transitions. [2020-10-29 03:30:39,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 481 transitions. [2020-10-29 03:30:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:30:39,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:39,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-29 03:30:39,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:30:39,148 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1383650448, now seen corresponding path program 2 times [2020-10-29 03:30:39,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:39,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669070141] [2020-10-29 03:30:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:30:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:30:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:30:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:44,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:30:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:30:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:30:44,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669070141] [2020-10-29 03:30:44,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:44,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:30:44,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993977689] [2020-10-29 03:30:44,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:30:44,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:44,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:30:44,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:44,479 INFO L87 Difference]: Start difference. First operand 352 states and 481 transitions. Second operand 10 states. [2020-10-29 03:30:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:45,624 INFO L93 Difference]: Finished difference Result 463 states and 620 transitions. [2020-10-29 03:30:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:30:45,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 03:30:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:45,629 INFO L225 Difference]: With dead ends: 463 [2020-10-29 03:30:45,629 INFO L226 Difference]: Without dead ends: 388 [2020-10-29 03:30:45,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-29 03:30:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 348. [2020-10-29 03:30:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-29 03:30:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 471 transitions. [2020-10-29 03:30:45,707 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 471 transitions. Word has length 50 [2020-10-29 03:30:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:45,707 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 471 transitions. [2020-10-29 03:30:45,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:30:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 471 transitions. [2020-10-29 03:30:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:30:45,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:45,709 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:45,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:30:45,710 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash 799452249, now seen corresponding path program 11 times [2020-10-29 03:30:45,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:45,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451380207] [2020-10-29 03:30:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:30:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:49,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:49,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:49,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:30:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:30:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:30:49,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451380207] [2020-10-29 03:30:49,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:49,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:30:49,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424819620] [2020-10-29 03:30:49,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:30:49,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:30:49,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:49,325 INFO L87 Difference]: Start difference. First operand 348 states and 471 transitions. Second operand 19 states.