/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/forester-heap/sll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:13:52,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:13:52,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:13:52,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:13:52,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:13:52,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:13:52,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:13:52,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:13:52,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:13:52,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:13:52,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:13:52,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:13:52,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:13:52,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:13:52,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:13:52,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:13:52,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:13:52,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:13:52,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:13:52,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:13:52,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:13:52,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:13:52,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:13:52,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:13:52,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:13:52,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:13:52,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:13:52,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:13:52,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:13:52,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:13:52,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:13:52,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:13:52,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:13:52,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:13:52,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:13:52,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:13:52,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:13:52,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:13:52,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:13:52,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:13:52,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:13:52,718 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 09:13:52,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:13:52,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:13:52,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:13:52,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:13:52,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:13:52,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:13:52,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:13:52,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:13:52,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:13:52,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:13:52,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:13:52,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:13:52,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:13:52,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:13:52,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:13:52,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:13:52,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:13:52,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:13:52,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:13:52,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:13:52,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:13:52,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:13:52,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:13:52,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:13:52,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:13:52,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:13:52,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:13:52,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:13:52,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:13:52,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:13:53,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:13:53,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:13:53,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:13:53,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:13:53,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:13:53,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2020-10-29 09:13:53,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d49b8523e/37ad42cf2a9a457680296da076f3e4fa/FLAGa39665168 [2020-10-29 09:13:54,069 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:13:54,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2020-10-29 09:13:54,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d49b8523e/37ad42cf2a9a457680296da076f3e4fa/FLAGa39665168 [2020-10-29 09:13:54,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d49b8523e/37ad42cf2a9a457680296da076f3e4fa [2020-10-29 09:13:54,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:13:54,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:13:54,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:13:54,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:13:54,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:13:54,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:13:54" (1/1) ... [2020-10-29 09:13:54,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f68f7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:54, skipping insertion in model container [2020-10-29 09:13:54,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:13:54" (1/1) ... [2020-10-29 09:13:54,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:13:54,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:13:54,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:13:54,858 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:13:54,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:13:55,001 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:13:55,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55 WrapperNode [2020-10-29 09:13:55,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:13:55,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:13:55,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:13:55,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:13:55,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (1/1) ... [2020-10-29 09:13:55,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:13:55,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:13:55,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:13:55,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:13:55,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (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 09:13:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:13:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:13:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:13:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:13:55,191 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:13:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:13:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:13:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:13:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:13:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:13:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:13:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:13:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:13:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:13:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:13:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:13:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:13:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:13:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:13:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:13:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:13:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:13:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:13:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:13:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:13:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:13:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:13:55,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:13:55,976 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-29 09:13:55,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:13:55 BoogieIcfgContainer [2020-10-29 09:13:55,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:13:55,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:13:55,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:13:55,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:13:55,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:13:54" (1/3) ... [2020-10-29 09:13:55,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:13:55, skipping insertion in model container [2020-10-29 09:13:55,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:55" (2/3) ... [2020-10-29 09:13:55,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:13:55, skipping insertion in model container [2020-10-29 09:13:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:13:55" (3/3) ... [2020-10-29 09:13:56,000 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2020-10-29 09:13:56,017 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:13:56,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:13:56,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:13:56,094 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:13:56,095 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:13:56,095 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:13:56,095 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:13:56,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:13:56,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:13:56,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:13:56,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:13:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-29 09:13:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:13:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:56,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:56,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:56,154 INFO L82 PathProgramCache]: Analyzing trace with hash -988081324, now seen corresponding path program 1 times [2020-10-29 09:13:56,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:56,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078420139] [2020-10-29 09:13:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:56,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:13:56,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:56,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 09:13:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:56,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:13:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:13:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:13:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:13:56,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:56,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:56,882 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 09:13:56,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078420139] [2020-10-29 09:13:56,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:56,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:13:56,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630077356] [2020-10-29 09:13:56,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:13:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:13:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:13:56,910 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 5 states. [2020-10-29 09:13:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:57,256 INFO L93 Difference]: Finished difference Result 163 states and 285 transitions. [2020-10-29 09:13:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:13:57,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-29 09:13:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:57,269 INFO L225 Difference]: With dead ends: 163 [2020-10-29 09:13:57,269 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 09:13:57,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 09:13:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2020-10-29 09:13:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:13:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-10-29 09:13:57,326 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 12 [2020-10-29 09:13:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:57,327 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-10-29 09:13:57,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:13:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-10-29 09:13:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:13:57,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:57,329 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] [2020-10-29 09:13:57,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:13:57,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1182304439, now seen corresponding path program 1 times [2020-10-29 09:13:57,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:57,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339764216] [2020-10-29 09:13:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:57,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:13:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:13:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:58,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:13:58,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:58,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:58,027 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 09:13:58,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339764216] [2020-10-29 09:13:58,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:58,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:13:58,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050546307] [2020-10-29 09:13:58,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:13:58,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:13:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:58,044 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 6 states. [2020-10-29 09:13:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:58,374 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-29 09:13:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:13:58,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-29 09:13:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:58,377 INFO L225 Difference]: With dead ends: 118 [2020-10-29 09:13:58,377 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:13:58,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:13:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:13:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2020-10-29 09:13:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 09:13:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2020-10-29 09:13:58,391 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 20 [2020-10-29 09:13:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:58,392 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2020-10-29 09:13:58,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:13:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2020-10-29 09:13:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:13:58,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:58,393 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 09:13:58,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:13:58,394 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:58,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 252476600, now seen corresponding path program 1 times [2020-10-29 09:13:58,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:58,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508107117] [2020-10-29 09:13:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:59,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:13:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:13:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:59,157 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 09:13:59,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508107117] [2020-10-29 09:13:59,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:59,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:13:59,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500434822] [2020-10-29 09:13:59,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:13:59,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:59,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:13:59,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:59,161 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand 6 states. [2020-10-29 09:13:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:59,640 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2020-10-29 09:13:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:13:59,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 09:13:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:59,644 INFO L225 Difference]: With dead ends: 103 [2020-10-29 09:13:59,646 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:13:59,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:13:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:13:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-29 09:13:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:13:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-10-29 09:13:59,674 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 23 [2020-10-29 09:13:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:59,674 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-10-29 09:13:59,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:13:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-10-29 09:13:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:13:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:59,676 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] [2020-10-29 09:13:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:13:59,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 605045206, now seen corresponding path program 1 times [2020-10-29 09:13:59,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:59,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187995321] [2020-10-29 09:13:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:14:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-29 09:14:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:00,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:14:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:00,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:00,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:14:00,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:00,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:00,373 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 09:14:00,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187995321] [2020-10-29 09:14:00,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:00,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:00,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717876480] [2020-10-29 09:14:00,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:00,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:00,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:00,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:00,376 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 8 states. [2020-10-29 09:14:01,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:01,083 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2020-10-29 09:14:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:01,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 09:14:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:01,087 INFO L225 Difference]: With dead ends: 199 [2020-10-29 09:14:01,087 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 09:14:01,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 09:14:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 81. [2020-10-29 09:14:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 09:14:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2020-10-29 09:14:01,105 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 24 [2020-10-29 09:14:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:01,105 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2020-10-29 09:14:01,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2020-10-29 09:14:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:14:01,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:01,107 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] [2020-10-29 09:14:01,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:14:01,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:01,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:01,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1884908884, now seen corresponding path program 1 times [2020-10-29 09:14:01,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:01,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540088792] [2020-10-29 09:14:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:01,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:14:01,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:01,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:14:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:01,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:01,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:01,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:01,967 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 09:14:01,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540088792] [2020-10-29 09:14:01,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:01,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:01,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039539212] [2020-10-29 09:14:01,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:01,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:01,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:01,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:01,970 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand 8 states. [2020-10-29 09:14:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:02,588 INFO L93 Difference]: Finished difference Result 192 states and 249 transitions. [2020-10-29 09:14:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:02,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 09:14:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:02,598 INFO L225 Difference]: With dead ends: 192 [2020-10-29 09:14:02,598 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 09:14:02,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 09:14:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 89. [2020-10-29 09:14:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 09:14:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2020-10-29 09:14:02,616 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 24 [2020-10-29 09:14:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:02,617 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2020-10-29 09:14:02,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2020-10-29 09:14:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:14:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:02,619 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] [2020-10-29 09:14:02,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:14:02,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1425758003, now seen corresponding path program 1 times [2020-10-29 09:14:02,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:02,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765499835] [2020-10-29 09:14:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:02,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:14:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:03,111 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 09:14:03,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765499835] [2020-10-29 09:14:03,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:03,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:03,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289259071] [2020-10-29 09:14:03,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:03,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:03,113 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand 8 states. [2020-10-29 09:14:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:03,659 INFO L93 Difference]: Finished difference Result 185 states and 239 transitions. [2020-10-29 09:14:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:03,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:14:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:03,661 INFO L225 Difference]: With dead ends: 185 [2020-10-29 09:14:03,662 INFO L226 Difference]: Without dead ends: 151 [2020-10-29 09:14:03,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-29 09:14:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 98. [2020-10-29 09:14:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 09:14:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2020-10-29 09:14:03,683 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 27 [2020-10-29 09:14:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:03,684 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2020-10-29 09:14:03,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2020-10-29 09:14:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:14:03,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:03,685 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] [2020-10-29 09:14:03,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:14:03,686 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1818785013, now seen corresponding path program 1 times [2020-10-29 09:14:03,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:03,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808239887] [2020-10-29 09:14:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:04,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:14:04,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-29 09:14:04,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:04,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:14:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:04,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:04,551 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 09:14:04,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808239887] [2020-10-29 09:14:04,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:04,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:04,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799532523] [2020-10-29 09:14:04,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:04,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:04,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:04,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:04,555 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand 8 states. [2020-10-29 09:14:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:04,966 INFO L93 Difference]: Finished difference Result 191 states and 246 transitions. [2020-10-29 09:14:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:04,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:14:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:04,969 INFO L225 Difference]: With dead ends: 191 [2020-10-29 09:14:04,969 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 09:14:04,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 09:14:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 104. [2020-10-29 09:14:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 09:14:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2020-10-29 09:14:04,986 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 27 [2020-10-29 09:14:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:04,987 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2020-10-29 09:14:04,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2020-10-29 09:14:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:14:04,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:04,988 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] [2020-10-29 09:14:04,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:14:04,989 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:04,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:04,989 INFO L82 PathProgramCache]: Analyzing trace with hash 568386703, now seen corresponding path program 1 times [2020-10-29 09:14:04,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:04,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644410083] [2020-10-29 09:14:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:14:05,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:05,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:05,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:05,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:05,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:05,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:05,413 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 09:14:05,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644410083] [2020-10-29 09:14:05,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:05,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:05,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502081811] [2020-10-29 09:14:05,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:05,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:05,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:05,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:05,417 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand 9 states. [2020-10-29 09:14:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:06,195 INFO L93 Difference]: Finished difference Result 179 states and 229 transitions. [2020-10-29 09:14:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:14:06,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 09:14:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:06,197 INFO L225 Difference]: With dead ends: 179 [2020-10-29 09:14:06,197 INFO L226 Difference]: Without dead ends: 175 [2020-10-29 09:14:06,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-29 09:14:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 110. [2020-10-29 09:14:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 09:14:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-10-29 09:14:06,215 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 27 [2020-10-29 09:14:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:06,216 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-10-29 09:14:06,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-10-29 09:14:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:14:06,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:06,217 INFO L422 BasicCegarLoop]: trace histogram [3, 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 09:14:06,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:14:06,218 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:06,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:06,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2100308321, now seen corresponding path program 1 times [2020-10-29 09:14:06,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:06,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033230679] [2020-10-29 09:14:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:06,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:14:06,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:14:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:06,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:06,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:06,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033230679] [2020-10-29 09:14:06,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:06,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:06,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600605185] [2020-10-29 09:14:06,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:06,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:06,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:06,949 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 9 states. [2020-10-29 09:14:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:07,585 INFO L93 Difference]: Finished difference Result 172 states and 221 transitions. [2020-10-29 09:14:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:07,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 09:14:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:07,587 INFO L225 Difference]: With dead ends: 172 [2020-10-29 09:14:07,587 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 09:14:07,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 09:14:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 98. [2020-10-29 09:14:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 09:14:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2020-10-29 09:14:07,604 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 28 [2020-10-29 09:14:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:07,605 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2020-10-29 09:14:07,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2020-10-29 09:14:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:14:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:07,613 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 09:14:07,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:14:07,614 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1699215758, now seen corresponding path program 1 times [2020-10-29 09:14:07,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:07,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276215774] [2020-10-29 09:14:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:07,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:07,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:14:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:08,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:08,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:08,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:08,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:08,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:08,090 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 09:14:08,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276215774] [2020-10-29 09:14:08,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:08,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:14:08,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544982929] [2020-10-29 09:14:08,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:08,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:08,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:08,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:08,093 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand 9 states. [2020-10-29 09:14:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:08,627 INFO L93 Difference]: Finished difference Result 171 states and 216 transitions. [2020-10-29 09:14:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:08,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-29 09:14:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:08,629 INFO L225 Difference]: With dead ends: 171 [2020-10-29 09:14:08,630 INFO L226 Difference]: Without dead ends: 167 [2020-10-29 09:14:08,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-29 09:14:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 107. [2020-10-29 09:14:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:14:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 135 transitions. [2020-10-29 09:14:08,654 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 135 transitions. Word has length 29 [2020-10-29 09:14:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:08,654 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 135 transitions. [2020-10-29 09:14:08,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 135 transitions. [2020-10-29 09:14:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:14:08,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:08,659 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 09:14:08,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:14:08,660 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:08,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1306188748, now seen corresponding path program 1 times [2020-10-29 09:14:08,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:08,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818657573] [2020-10-29 09:14:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:14:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-10-29 09:14:10,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:14:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:10,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:10,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:10,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:10,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:10,796 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 09:14:10,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818657573] [2020-10-29 09:14:10,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:10,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:14:10,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694359112] [2020-10-29 09:14:10,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:14:10,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:14:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:14:10,800 INFO L87 Difference]: Start difference. First operand 107 states and 135 transitions. Second operand 6 states. [2020-10-29 09:14:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:11,051 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2020-10-29 09:14:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:14:11,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 09:14:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:11,054 INFO L225 Difference]: With dead ends: 131 [2020-10-29 09:14:11,054 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 09:14:11,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 09:14:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-29 09:14:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:14:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2020-10-29 09:14:11,074 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 29 [2020-10-29 09:14:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:11,074 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2020-10-29 09:14:11,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:14:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2020-10-29 09:14:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:14:11,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:11,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:14:11,076 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash 660845278, now seen corresponding path program 1 times [2020-10-29 09:14:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995695650] [2020-10-29 09:14:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:14:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 09:14:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:11,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:11,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:14:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:11,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:11,762 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 09:14:11,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995695650] [2020-10-29 09:14:11,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:11,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:14:11,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112391192] [2020-10-29 09:14:11,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:11,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:11,765 INFO L87 Difference]: Start difference. First operand 107 states and 134 transitions. Second operand 9 states. [2020-10-29 09:14:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:12,179 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2020-10-29 09:14:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:14:12,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-29 09:14:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:12,182 INFO L225 Difference]: With dead ends: 157 [2020-10-29 09:14:12,182 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 09:14:12,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 09:14:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2020-10-29 09:14:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 09:14:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2020-10-29 09:14:12,199 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 30 [2020-10-29 09:14:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:12,199 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2020-10-29 09:14:12,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2020-10-29 09:14:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:14:12,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:12,202 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] [2020-10-29 09:14:12,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:14:12,202 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash -148501348, now seen corresponding path program 1 times [2020-10-29 09:14:12,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:12,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867636262] [2020-10-29 09:14:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:12,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:12,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:12,879 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 09:14:12,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867636262] [2020-10-29 09:14:12,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:12,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:14:12,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090326942] [2020-10-29 09:14:12,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:14:12,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:14:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:14:12,882 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand 6 states. [2020-10-29 09:14:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:13,171 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2020-10-29 09:14:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:14:13,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:14:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:13,173 INFO L225 Difference]: With dead ends: 163 [2020-10-29 09:14:13,173 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 09:14:13,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 09:14:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-10-29 09:14:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 09:14:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2020-10-29 09:14:13,191 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 30 [2020-10-29 09:14:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:13,191 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2020-10-29 09:14:13,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:14:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2020-10-29 09:14:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:13,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:13,192 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 09:14:13,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:14:13,193 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash 888281475, now seen corresponding path program 1 times [2020-10-29 09:14:13,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:13,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558148939] [2020-10-29 09:14:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:13,941 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 09:14:13,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558148939] [2020-10-29 09:14:13,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:13,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:14:13,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901744711] [2020-10-29 09:14:13,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:13,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:13,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:13,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:13,944 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand 9 states. [2020-10-29 09:14:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:14,283 INFO L93 Difference]: Finished difference Result 187 states and 237 transitions. [2020-10-29 09:14:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:14,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 09:14:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:14,284 INFO L225 Difference]: With dead ends: 187 [2020-10-29 09:14:14,284 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:14:14,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:14:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2020-10-29 09:14:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 09:14:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2020-10-29 09:14:14,298 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2020-10-29 09:14:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:14,298 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2020-10-29 09:14:14,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2020-10-29 09:14:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:14,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:14,299 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:14,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:14:14,299 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash 851874146, now seen corresponding path program 1 times [2020-10-29 09:14:14,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650170875] [2020-10-29 09:14:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:14,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:14:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:14,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:14,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650170875] [2020-10-29 09:14:14,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:14,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:14,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954822877] [2020-10-29 09:14:14,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:14,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:14,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:14,828 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 10 states. [2020-10-29 09:14:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:15,437 INFO L93 Difference]: Finished difference Result 195 states and 247 transitions. [2020-10-29 09:14:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:15,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-29 09:14:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:15,439 INFO L225 Difference]: With dead ends: 195 [2020-10-29 09:14:15,439 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 09:14:15,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 09:14:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 100. [2020-10-29 09:14:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 09:14:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 128 transitions. [2020-10-29 09:14:15,460 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 128 transitions. Word has length 31 [2020-10-29 09:14:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:15,460 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 128 transitions. [2020-10-29 09:14:15,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 128 transitions. [2020-10-29 09:14:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:15,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:15,461 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:15,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:14:15,461 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash 458847136, now seen corresponding path program 1 times [2020-10-29 09:14:15,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:15,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008325733] [2020-10-29 09:14:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:14:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:16,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:16,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008325733] [2020-10-29 09:14:16,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:16,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:16,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064195315] [2020-10-29 09:14:16,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:16,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:16,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:16,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:16,305 INFO L87 Difference]: Start difference. First operand 100 states and 128 transitions. Second operand 9 states. [2020-10-29 09:14:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:16,703 INFO L93 Difference]: Finished difference Result 166 states and 211 transitions. [2020-10-29 09:14:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:16,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 09:14:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:16,705 INFO L225 Difference]: With dead ends: 166 [2020-10-29 09:14:16,705 INFO L226 Difference]: Without dead ends: 129 [2020-10-29 09:14:16,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-29 09:14:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2020-10-29 09:14:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 09:14:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2020-10-29 09:14:16,719 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 31 [2020-10-29 09:14:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:16,719 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2020-10-29 09:14:16,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2020-10-29 09:14:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:16,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:16,720 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] [2020-10-29 09:14:16,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:14:16,720 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 26299553, now seen corresponding path program 1 times [2020-10-29 09:14:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:16,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407178083] [2020-10-29 09:14:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:14:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:17,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:17,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:17,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407178083] [2020-10-29 09:14:17,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:17,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:17,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176291421] [2020-10-29 09:14:17,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:17,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:17,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:17,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:17,594 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand 8 states. [2020-10-29 09:14:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:17,989 INFO L93 Difference]: Finished difference Result 158 states and 199 transitions. [2020-10-29 09:14:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:17,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-29 09:14:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:17,991 INFO L225 Difference]: With dead ends: 158 [2020-10-29 09:14:17,991 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 09:14:17,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 09:14:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-29 09:14:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 09:14:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2020-10-29 09:14:18,005 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 31 [2020-10-29 09:14:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:18,006 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2020-10-29 09:14:18,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2020-10-29 09:14:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:18,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:18,007 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:18,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:14:18,007 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 633019428, now seen corresponding path program 2 times [2020-10-29 09:14:18,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:18,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843012815] [2020-10-29 09:14:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:18,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843012815] [2020-10-29 09:14:18,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:18,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:18,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998937334] [2020-10-29 09:14:18,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:18,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:18,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:18,440 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand 11 states. [2020-10-29 09:14:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:19,202 INFO L93 Difference]: Finished difference Result 185 states and 233 transitions. [2020-10-29 09:14:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:14:19,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 09:14:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:19,203 INFO L225 Difference]: With dead ends: 185 [2020-10-29 09:14:19,204 INFO L226 Difference]: Without dead ends: 181 [2020-10-29 09:14:19,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-29 09:14:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 111. [2020-10-29 09:14:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 09:14:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2020-10-29 09:14:19,220 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 31 [2020-10-29 09:14:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:19,220 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2020-10-29 09:14:19,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2020-10-29 09:14:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:14:19,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:19,221 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] [2020-10-29 09:14:19,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:14:19,222 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash 994629411, now seen corresponding path program 1 times [2020-10-29 09:14:19,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430737984] [2020-10-29 09:14:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:14:20,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:14:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-29 09:14:20,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:20,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:20,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:20,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:20,744 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 09:14:20,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430737984] [2020-10-29 09:14:20,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:20,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:20,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986475779] [2020-10-29 09:14:20,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:20,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:20,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:20,748 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand 8 states. [2020-10-29 09:14:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:21,165 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2020-10-29 09:14:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:21,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 09:14:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:21,167 INFO L225 Difference]: With dead ends: 166 [2020-10-29 09:14:21,167 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 09:14:21,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 09:14:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2020-10-29 09:14:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 09:14:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2020-10-29 09:14:21,186 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 33 [2020-10-29 09:14:21,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:21,186 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2020-10-29 09:14:21,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2020-10-29 09:14:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:14:21,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:21,188 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] [2020-10-29 09:14:21,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:14:21,188 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:21,189 INFO L82 PathProgramCache]: Analyzing trace with hash 601602401, now seen corresponding path program 1 times [2020-10-29 09:14:21,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:21,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865515915] [2020-10-29 09:14:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:21,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:21,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:21,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:21,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:21,911 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 09:14:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865515915] [2020-10-29 09:14:21,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:21,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:21,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499104983] [2020-10-29 09:14:21,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:21,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:21,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:21,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:21,915 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand 11 states. [2020-10-29 09:14:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:22,596 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2020-10-29 09:14:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:14:22,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 09:14:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:22,600 INFO L225 Difference]: With dead ends: 181 [2020-10-29 09:14:22,600 INFO L226 Difference]: Without dead ends: 177 [2020-10-29 09:14:22,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-29 09:14:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2020-10-29 09:14:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 09:14:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 163 transitions. [2020-10-29 09:14:22,615 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 163 transitions. Word has length 33 [2020-10-29 09:14:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:22,616 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 163 transitions. [2020-10-29 09:14:22,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 163 transitions. [2020-10-29 09:14:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:14:22,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:22,617 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] [2020-10-29 09:14:22,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:14:22,617 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:22,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1066274918, now seen corresponding path program 1 times [2020-10-29 09:14:22,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:22,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786323455] [2020-10-29 09:14:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:22,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:22,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786323455] [2020-10-29 09:14:22,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:22,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:22,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35315166] [2020-10-29 09:14:22,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:22,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:22,894 INFO L87 Difference]: Start difference. First operand 129 states and 163 transitions. Second operand 9 states. [2020-10-29 09:14:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:23,379 INFO L93 Difference]: Finished difference Result 172 states and 216 transitions. [2020-10-29 09:14:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:14:23,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-29 09:14:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:23,381 INFO L225 Difference]: With dead ends: 172 [2020-10-29 09:14:23,381 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 09:14:23,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 09:14:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-29 09:14:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 09:14:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2020-10-29 09:14:23,397 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 33 [2020-10-29 09:14:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:23,397 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2020-10-29 09:14:23,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2020-10-29 09:14:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:14:23,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:23,398 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] [2020-10-29 09:14:23,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:14:23,399 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash 994569579, now seen corresponding path program 1 times [2020-10-29 09:14:23,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:23,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702237962] [2020-10-29 09:14:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:14:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-29 09:14:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:24,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:24,513 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 09:14:24,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702237962] [2020-10-29 09:14:24,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:24,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:24,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660111509] [2020-10-29 09:14:24,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:24,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:24,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:24,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:24,516 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand 11 states. [2020-10-29 09:14:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:25,198 INFO L93 Difference]: Finished difference Result 176 states and 218 transitions. [2020-10-29 09:14:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:14:25,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 09:14:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:25,203 INFO L225 Difference]: With dead ends: 176 [2020-10-29 09:14:25,203 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 09:14:25,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 09:14:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-29 09:14:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 09:14:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 167 transitions. [2020-10-29 09:14:25,237 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 167 transitions. Word has length 34 [2020-10-29 09:14:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:25,238 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 167 transitions. [2020-10-29 09:14:25,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 167 transitions. [2020-10-29 09:14:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:25,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:25,238 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 09:14:25,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:14:25,239 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:25,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:25,239 INFO L82 PathProgramCache]: Analyzing trace with hash -862741323, now seen corresponding path program 2 times [2020-10-29 09:14:25,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:25,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769784950] [2020-10-29 09:14:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:25,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:25,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:25,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:26,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:26,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:26,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:26,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:26,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:26,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769784950] [2020-10-29 09:14:26,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:26,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:26,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797264727] [2020-10-29 09:14:26,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:26,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:26,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:26,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:26,126 INFO L87 Difference]: Start difference. First operand 134 states and 167 transitions. Second operand 11 states. [2020-10-29 09:14:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:26,828 INFO L93 Difference]: Finished difference Result 218 states and 274 transitions. [2020-10-29 09:14:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:26,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 09:14:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:26,830 INFO L225 Difference]: With dead ends: 218 [2020-10-29 09:14:26,830 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 09:14:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 09:14:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 135. [2020-10-29 09:14:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 09:14:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2020-10-29 09:14:26,848 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 35 [2020-10-29 09:14:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:26,848 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2020-10-29 09:14:26,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2020-10-29 09:14:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:26,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:26,849 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:26,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:14:26,850 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1688315916, now seen corresponding path program 1 times [2020-10-29 09:14:26,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753123748] [2020-10-29 09:14:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:28,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:28,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:28,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:28,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:28,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753123748] [2020-10-29 09:14:28,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:28,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:28,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294595711] [2020-10-29 09:14:28,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:28,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:28,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:28,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:28,720 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand 10 states. [2020-10-29 09:14:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:29,402 INFO L93 Difference]: Finished difference Result 229 states and 286 transitions. [2020-10-29 09:14:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:29,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-29 09:14:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:29,405 INFO L225 Difference]: With dead ends: 229 [2020-10-29 09:14:29,405 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 09:14:29,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 09:14:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 155. [2020-10-29 09:14:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 09:14:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2020-10-29 09:14:29,428 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 35 [2020-10-29 09:14:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:29,428 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2020-10-29 09:14:29,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2020-10-29 09:14:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:29,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:29,430 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] [2020-10-29 09:14:29,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:14:29,431 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1651167082, now seen corresponding path program 1 times [2020-10-29 09:14:29,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:29,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981590137] [2020-10-29 09:14:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:30,381 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 09:14:30,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981590137] [2020-10-29 09:14:30,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:30,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:30,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183849127] [2020-10-29 09:14:30,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:30,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:30,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:30,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:30,383 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand 10 states. [2020-10-29 09:14:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:31,096 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2020-10-29 09:14:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:31,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-29 09:14:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:31,098 INFO L225 Difference]: With dead ends: 210 [2020-10-29 09:14:31,099 INFO L226 Difference]: Without dead ends: 197 [2020-10-29 09:14:31,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-29 09:14:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2020-10-29 09:14:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-29 09:14:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 209 transitions. [2020-10-29 09:14:31,122 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 209 transitions. Word has length 35 [2020-10-29 09:14:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:31,122 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 209 transitions. [2020-10-29 09:14:31,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 209 transitions. [2020-10-29 09:14:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:31,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:31,123 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 09:14:31,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:14:31,123 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash -924780937, now seen corresponding path program 3 times [2020-10-29 09:14:31,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:31,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469293018] [2020-10-29 09:14:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:31,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:31,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469293018] [2020-10-29 09:14:31,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:31,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:31,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334704349] [2020-10-29 09:14:31,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:31,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:31,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:31,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:31,960 INFO L87 Difference]: Start difference. First operand 168 states and 209 transitions. Second operand 12 states. [2020-10-29 09:14:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:32,796 INFO L93 Difference]: Finished difference Result 223 states and 277 transitions. [2020-10-29 09:14:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:32,797 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-29 09:14:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:32,799 INFO L225 Difference]: With dead ends: 223 [2020-10-29 09:14:32,799 INFO L226 Difference]: Without dead ends: 219 [2020-10-29 09:14:32,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-29 09:14:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2020-10-29 09:14:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 09:14:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2020-10-29 09:14:32,822 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 35 [2020-10-29 09:14:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:32,822 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2020-10-29 09:14:32,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2020-10-29 09:14:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:32,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:32,823 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:32,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:14:32,824 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1661915850, now seen corresponding path program 2 times [2020-10-29 09:14:32,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:32,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070582066] [2020-10-29 09:14:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:33,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:33,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:14:33,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:33,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:33,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:33,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:33,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:33,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:33,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070582066] [2020-10-29 09:14:33,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:33,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:33,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34525679] [2020-10-29 09:14:33,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:33,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:33,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:33,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:33,775 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand 11 states. [2020-10-29 09:14:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:34,508 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2020-10-29 09:14:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:34,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-29 09:14:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:34,510 INFO L225 Difference]: With dead ends: 195 [2020-10-29 09:14:34,510 INFO L226 Difference]: Without dead ends: 191 [2020-10-29 09:14:34,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-29 09:14:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 163. [2020-10-29 09:14:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 09:14:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2020-10-29 09:14:34,531 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 37 [2020-10-29 09:14:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:34,531 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2020-10-29 09:14:34,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2020-10-29 09:14:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:34,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:34,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:34,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:14:34,533 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash 965174127, now seen corresponding path program 2 times [2020-10-29 09:14:34,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:34,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027533867] [2020-10-29 09:14:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:35,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:35,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027533867] [2020-10-29 09:14:35,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:35,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:35,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937199406] [2020-10-29 09:14:35,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:35,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:35,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:35,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:35,065 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand 11 states. [2020-10-29 09:14:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:36,078 INFO L93 Difference]: Finished difference Result 211 states and 258 transitions. [2020-10-29 09:14:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:14:36,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-29 09:14:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:36,082 INFO L225 Difference]: With dead ends: 211 [2020-10-29 09:14:36,082 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 09:14:36,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 09:14:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 173. [2020-10-29 09:14:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 09:14:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2020-10-29 09:14:36,106 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 37 [2020-10-29 09:14:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:36,106 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2020-10-29 09:14:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2020-10-29 09:14:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:36,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:36,107 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:36,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:14:36,108 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash -455019466, now seen corresponding path program 2 times [2020-10-29 09:14:36,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:36,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167183076] [2020-10-29 09:14:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:37,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:37,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167183076] [2020-10-29 09:14:37,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:37,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:37,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589775855] [2020-10-29 09:14:37,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:37,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:37,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:37,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:37,256 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand 11 states. [2020-10-29 09:14:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:38,168 INFO L93 Difference]: Finished difference Result 202 states and 249 transitions. [2020-10-29 09:14:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:38,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 09:14:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:38,170 INFO L225 Difference]: With dead ends: 202 [2020-10-29 09:14:38,170 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 09:14:38,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 09:14:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 161. [2020-10-29 09:14:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 09:14:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2020-10-29 09:14:38,194 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 38 [2020-10-29 09:14:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:38,194 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2020-10-29 09:14:38,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2020-10-29 09:14:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:14:38,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:38,195 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:38,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:14:38,196 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:38,196 INFO L82 PathProgramCache]: Analyzing trace with hash 641696199, now seen corresponding path program 2 times [2020-10-29 09:14:38,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:38,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738213606] [2020-10-29 09:14:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:39,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:14:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:39,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:39,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:39,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738213606] [2020-10-29 09:14:39,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:39,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:39,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152365687] [2020-10-29 09:14:39,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:39,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:39,585 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand 12 states. [2020-10-29 09:14:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:40,450 INFO L93 Difference]: Finished difference Result 225 states and 278 transitions. [2020-10-29 09:14:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:40,451 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-29 09:14:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:40,453 INFO L225 Difference]: With dead ends: 225 [2020-10-29 09:14:40,453 INFO L226 Difference]: Without dead ends: 221 [2020-10-29 09:14:40,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:14:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-29 09:14:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 168. [2020-10-29 09:14:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-29 09:14:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2020-10-29 09:14:40,477 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 39 [2020-10-29 09:14:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:40,477 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2020-10-29 09:14:40,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2020-10-29 09:14:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:14:40,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:40,479 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 09:14:40,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:14:40,479 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash -258983184, now seen corresponding path program 1 times [2020-10-29 09:14:40,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:40,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353730052] [2020-10-29 09:14:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:14:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:41,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:41,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353730052] [2020-10-29 09:14:41,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:41,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:41,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923792924] [2020-10-29 09:14:41,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:41,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:41,192 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand 12 states. [2020-10-29 09:14:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:41,902 INFO L93 Difference]: Finished difference Result 254 states and 318 transitions. [2020-10-29 09:14:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:41,903 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-29 09:14:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:41,908 INFO L225 Difference]: With dead ends: 254 [2020-10-29 09:14:41,909 INFO L226 Difference]: Without dead ends: 250 [2020-10-29 09:14:41,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-29 09:14:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 191. [2020-10-29 09:14:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-29 09:14:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 239 transitions. [2020-10-29 09:14:41,933 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 239 transitions. Word has length 39 [2020-10-29 09:14:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:41,933 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 239 transitions. [2020-10-29 09:14:41,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 239 transitions. [2020-10-29 09:14:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:14:41,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:41,934 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 09:14:41,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 09:14:41,934 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash -652010194, now seen corresponding path program 1 times [2020-10-29 09:14:41,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:41,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425756095] [2020-10-29 09:14:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:43,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425756095] [2020-10-29 09:14:43,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:43,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:43,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391164529] [2020-10-29 09:14:43,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:43,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:43,370 INFO L87 Difference]: Start difference. First operand 191 states and 239 transitions. Second operand 9 states. [2020-10-29 09:14:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:43,815 INFO L93 Difference]: Finished difference Result 222 states and 276 transitions. [2020-10-29 09:14:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:43,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-29 09:14:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:43,817 INFO L225 Difference]: With dead ends: 222 [2020-10-29 09:14:43,817 INFO L226 Difference]: Without dead ends: 196 [2020-10-29 09:14:43,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-29 09:14:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-29 09:14:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 09:14:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 242 transitions. [2020-10-29 09:14:43,843 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 242 transitions. Word has length 39 [2020-10-29 09:14:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:43,843 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 242 transitions. [2020-10-29 09:14:43,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 242 transitions. [2020-10-29 09:14:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:14:43,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:43,844 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:43,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 09:14:43,844 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:43,845 INFO L82 PathProgramCache]: Analyzing trace with hash 619063945, now seen corresponding path program 3 times [2020-10-29 09:14:43,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:43,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292482784] [2020-10-29 09:14:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:44,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:44,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:45,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:45,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:45,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:45,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292482784] [2020-10-29 09:14:45,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:45,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:45,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188570322] [2020-10-29 09:14:45,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:45,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:45,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:45,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:45,247 INFO L87 Difference]: Start difference. First operand 194 states and 242 transitions. Second operand 11 states. [2020-10-29 09:14:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:45,863 INFO L93 Difference]: Finished difference Result 297 states and 371 transitions. [2020-10-29 09:14:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:45,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-29 09:14:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:45,865 INFO L225 Difference]: With dead ends: 297 [2020-10-29 09:14:45,865 INFO L226 Difference]: Without dead ends: 220 [2020-10-29 09:14:45,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-29 09:14:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2020-10-29 09:14:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 09:14:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 231 transitions. [2020-10-29 09:14:45,888 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 231 transitions. Word has length 39 [2020-10-29 09:14:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:45,888 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 231 transitions. [2020-10-29 09:14:45,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 231 transitions. [2020-10-29 09:14:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:14:45,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:45,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:45,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 09:14:45,890 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash 86220220, now seen corresponding path program 1 times [2020-10-29 09:14:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:45,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011536168] [2020-10-29 09:14:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:46,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:46,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:46,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:46,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:46,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011536168] [2020-10-29 09:14:46,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:46,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:46,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911134441] [2020-10-29 09:14:46,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:46,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:46,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:46,904 INFO L87 Difference]: Start difference. First operand 187 states and 231 transitions. Second operand 12 states. [2020-10-29 09:14:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:47,865 INFO L93 Difference]: Finished difference Result 246 states and 304 transitions. [2020-10-29 09:14:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:47,865 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-29 09:14:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:47,866 INFO L225 Difference]: With dead ends: 246 [2020-10-29 09:14:47,867 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 09:14:47,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 09:14:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 187. [2020-10-29 09:14:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 09:14:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 230 transitions. [2020-10-29 09:14:47,891 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 230 transitions. Word has length 40 [2020-10-29 09:14:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:47,891 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 230 transitions. [2020-10-29 09:14:47,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 230 transitions. [2020-10-29 09:14:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:47,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:47,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:47,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 09:14:47,892 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 254773861, now seen corresponding path program 1 times [2020-10-29 09:14:47,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:47,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852641174] [2020-10-29 09:14:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:14:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:48,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852641174] [2020-10-29 09:14:48,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:48,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:48,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962484050] [2020-10-29 09:14:48,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:48,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:48,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:48,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:48,710 INFO L87 Difference]: Start difference. First operand 187 states and 230 transitions. Second operand 12 states. [2020-10-29 09:14:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:49,444 INFO L93 Difference]: Finished difference Result 239 states and 294 transitions. [2020-10-29 09:14:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:49,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-29 09:14:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:49,447 INFO L225 Difference]: With dead ends: 239 [2020-10-29 09:14:49,447 INFO L226 Difference]: Without dead ends: 235 [2020-10-29 09:14:49,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-29 09:14:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 181. [2020-10-29 09:14:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-29 09:14:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 224 transitions. [2020-10-29 09:14:49,466 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 224 transitions. Word has length 41 [2020-10-29 09:14:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:49,466 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 224 transitions. [2020-10-29 09:14:49,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 224 transitions. [2020-10-29 09:14:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:49,467 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:49,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 09:14:49,467 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:49,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1644622722, now seen corresponding path program 1 times [2020-10-29 09:14:49,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:49,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106031159] [2020-10-29 09:14:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:14:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:14:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:14:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:49,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:14:49,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106031159] [2020-10-29 09:14:49,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:49,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:14:49,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925331543] [2020-10-29 09:14:49,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:14:49,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:49,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:14:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:14:49,560 INFO L87 Difference]: Start difference. First operand 181 states and 224 transitions. Second operand 4 states. [2020-10-29 09:14:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:49,727 INFO L93 Difference]: Finished difference Result 311 states and 386 transitions. [2020-10-29 09:14:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:14:49,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 09:14:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:49,728 INFO L225 Difference]: With dead ends: 311 [2020-10-29 09:14:49,729 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 09:14:49,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:14:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 09:14:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-29 09:14:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-29 09:14:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 214 transitions. [2020-10-29 09:14:49,752 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 214 transitions. Word has length 41 [2020-10-29 09:14:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:49,752 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 214 transitions. [2020-10-29 09:14:49,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:14:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 214 transitions. [2020-10-29 09:14:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:49,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:49,753 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:49,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 09:14:49,754 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2140871484, now seen corresponding path program 3 times [2020-10-29 09:14:49,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:49,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873074145] [2020-10-29 09:14:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:50,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:14:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:50,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:50,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873074145] [2020-10-29 09:14:50,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:50,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:50,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476711628] [2020-10-29 09:14:50,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:50,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:50,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:50,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:50,661 INFO L87 Difference]: Start difference. First operand 177 states and 214 transitions. Second operand 13 states. [2020-10-29 09:14:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:51,827 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2020-10-29 09:14:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:14:51,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 09:14:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:51,831 INFO L225 Difference]: With dead ends: 282 [2020-10-29 09:14:51,831 INFO L226 Difference]: Without dead ends: 278 [2020-10-29 09:14:51,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:14:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-29 09:14:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 199. [2020-10-29 09:14:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-29 09:14:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2020-10-29 09:14:51,852 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 41 [2020-10-29 09:14:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:51,852 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2020-10-29 09:14:51,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2020-10-29 09:14:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:14:51,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:51,853 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 09:14:51,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 09:14:51,853 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:51,853 INFO L82 PathProgramCache]: Analyzing trace with hash 83735605, now seen corresponding path program 1 times [2020-10-29 09:14:51,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:51,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144117426] [2020-10-29 09:14:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:52,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:52,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:14:52,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:52,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:14:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:52,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144117426] [2020-10-29 09:14:52,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:52,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:52,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813295863] [2020-10-29 09:14:52,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:52,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:52,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:52,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:52,237 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand 10 states. [2020-10-29 09:14:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:52,910 INFO L93 Difference]: Finished difference Result 272 states and 332 transitions. [2020-10-29 09:14:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:52,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 09:14:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:52,912 INFO L225 Difference]: With dead ends: 272 [2020-10-29 09:14:52,912 INFO L226 Difference]: Without dead ends: 249 [2020-10-29 09:14:52,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-29 09:14:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 212. [2020-10-29 09:14:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-29 09:14:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 256 transitions. [2020-10-29 09:14:52,944 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 256 transitions. Word has length 42 [2020-10-29 09:14:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:52,944 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 256 transitions. [2020-10-29 09:14:52,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 256 transitions. [2020-10-29 09:14:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:14:52,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:52,946 INFO L422 BasicCegarLoop]: trace histogram [4, 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 09:14:52,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 09:14:52,946 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1595897528, now seen corresponding path program 1 times [2020-10-29 09:14:52,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:52,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863970456] [2020-10-29 09:14:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:53,701 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 09:14:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:53,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863970456] [2020-10-29 09:14:53,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:53,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:53,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214930358] [2020-10-29 09:14:53,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:53,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:53,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:53,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:53,899 INFO L87 Difference]: Start difference. First operand 212 states and 256 transitions. Second operand 12 states. [2020-10-29 09:14:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:54,742 INFO L93 Difference]: Finished difference Result 329 states and 397 transitions. [2020-10-29 09:14:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:54,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-29 09:14:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:54,749 INFO L225 Difference]: With dead ends: 329 [2020-10-29 09:14:54,749 INFO L226 Difference]: Without dead ends: 278 [2020-10-29 09:14:54,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-29 09:14:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 233. [2020-10-29 09:14:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 09:14:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 280 transitions. [2020-10-29 09:14:54,781 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 280 transitions. Word has length 42 [2020-10-29 09:14:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:54,781 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 280 transitions. [2020-10-29 09:14:54,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 280 transitions. [2020-10-29 09:14:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:14:54,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:54,782 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:54,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 09:14:54,783 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:54,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1202870518, now seen corresponding path program 1 times [2020-10-29 09:14:54,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:54,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513106638] [2020-10-29 09:14:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:55,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:55,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:14:55,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:14:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:56,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:56,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513106638] [2020-10-29 09:14:56,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:56,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:56,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790747924] [2020-10-29 09:14:56,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:56,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:56,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:56,100 INFO L87 Difference]: Start difference. First operand 233 states and 280 transitions. Second operand 11 states. [2020-10-29 09:14:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:56,757 INFO L93 Difference]: Finished difference Result 305 states and 366 transitions. [2020-10-29 09:14:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:56,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-29 09:14:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:56,759 INFO L225 Difference]: With dead ends: 305 [2020-10-29 09:14:56,759 INFO L226 Difference]: Without dead ends: 247 [2020-10-29 09:14:56,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-29 09:14:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2020-10-29 09:14:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-29 09:14:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 275 transitions. [2020-10-29 09:14:56,785 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 275 transitions. Word has length 42 [2020-10-29 09:14:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:56,785 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 275 transitions. [2020-10-29 09:14:56,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 275 transitions. [2020-10-29 09:14:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:14:56,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:56,787 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:56,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 09:14:56,787 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:56,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2120568087, now seen corresponding path program 1 times [2020-10-29 09:14:56,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:56,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401603388] [2020-10-29 09:14:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:14:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:57,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:57,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:57,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:57,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:57,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401603388] [2020-10-29 09:14:57,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:57,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:57,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317469155] [2020-10-29 09:14:57,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:57,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:57,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:57,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:57,431 INFO L87 Difference]: Start difference. First operand 232 states and 275 transitions. Second operand 10 states. [2020-10-29 09:14:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:58,072 INFO L93 Difference]: Finished difference Result 272 states and 323 transitions. [2020-10-29 09:14:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:14:58,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-29 09:14:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:58,074 INFO L225 Difference]: With dead ends: 272 [2020-10-29 09:14:58,074 INFO L226 Difference]: Without dead ends: 268 [2020-10-29 09:14:58,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:58,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-29 09:14:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2020-10-29 09:14:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-29 09:14:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 279 transitions. [2020-10-29 09:14:58,106 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 279 transitions. Word has length 43 [2020-10-29 09:14:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:58,106 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 279 transitions. [2020-10-29 09:14:58,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 279 transitions. [2020-10-29 09:14:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:14:58,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:58,107 INFO L422 BasicCegarLoop]: trace histogram [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 09:14:58,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 09:14:58,108 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 27234369, now seen corresponding path program 1 times [2020-10-29 09:14:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:58,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672172053] [2020-10-29 09:14:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:14:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,990 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 09:14:58,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672172053] [2020-10-29 09:14:58,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:58,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:58,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237306958] [2020-10-29 09:14:58,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:58,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:58,991 INFO L87 Difference]: Start difference. First operand 236 states and 279 transitions. Second operand 12 states. [2020-10-29 09:14:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:59,815 INFO L93 Difference]: Finished difference Result 304 states and 363 transitions. [2020-10-29 09:14:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:59,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-29 09:14:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:59,817 INFO L225 Difference]: With dead ends: 304 [2020-10-29 09:14:59,817 INFO L226 Difference]: Without dead ends: 300 [2020-10-29 09:14:59,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-29 09:14:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 242. [2020-10-29 09:14:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-29 09:14:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2020-10-29 09:14:59,870 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 43 [2020-10-29 09:14:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:59,870 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2020-10-29 09:14:59,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2020-10-29 09:14:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:14:59,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:59,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 09:14:59,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 09:14:59,872 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1640642950, now seen corresponding path program 4 times [2020-10-29 09:14:59,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:59,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758225638] [2020-10-29 09:14:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:15:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:15:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:00,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:00,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758225638] [2020-10-29 09:15:00,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:00,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:15:00,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885220576] [2020-10-29 09:15:00,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:15:00,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:00,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:15:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:15:00,432 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand 11 states. [2020-10-29 09:15:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:01,550 INFO L93 Difference]: Finished difference Result 319 states and 377 transitions. [2020-10-29 09:15:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:15:01,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-29 09:15:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:01,553 INFO L225 Difference]: With dead ends: 319 [2020-10-29 09:15:01,553 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 09:15:01,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:15:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 09:15:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 263. [2020-10-29 09:15:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 09:15:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 311 transitions. [2020-10-29 09:15:01,590 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 311 transitions. Word has length 43 [2020-10-29 09:15:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:01,591 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 311 transitions. [2020-10-29 09:15:01,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:15:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 311 transitions. [2020-10-29 09:15:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:15:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:01,592 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 09:15:01,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 09:15:01,592 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash 369029771, now seen corresponding path program 1 times [2020-10-29 09:15:01,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:01,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34713126] [2020-10-29 09:15:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:15:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:15:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:02,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:02,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34713126] [2020-10-29 09:15:02,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:02,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:02,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679493335] [2020-10-29 09:15:02,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:02,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:02,888 INFO L87 Difference]: Start difference. First operand 263 states and 311 transitions. Second operand 13 states. [2020-10-29 09:15:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:03,753 INFO L93 Difference]: Finished difference Result 324 states and 386 transitions. [2020-10-29 09:15:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:15:03,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-29 09:15:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:03,755 INFO L225 Difference]: With dead ends: 324 [2020-10-29 09:15:03,755 INFO L226 Difference]: Without dead ends: 312 [2020-10-29 09:15:03,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:15:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-29 09:15:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 263. [2020-10-29 09:15:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 09:15:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 310 transitions. [2020-10-29 09:15:03,785 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 310 transitions. Word has length 44 [2020-10-29 09:15:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:03,785 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 310 transitions. [2020-10-29 09:15:03,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 310 transitions. [2020-10-29 09:15:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:15:03,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:03,786 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:03,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 09:15:03,786 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2123012556, now seen corresponding path program 1 times [2020-10-29 09:15:03,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:03,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636678824] [2020-10-29 09:15:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:03,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:15:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-29 09:15:04,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:15:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:15:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:15:04,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636678824] [2020-10-29 09:15:04,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:04,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:15:04,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567156553] [2020-10-29 09:15:04,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:15:04,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:04,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:15:04,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:15:04,541 INFO L87 Difference]: Start difference. First operand 263 states and 310 transitions. Second operand 10 states. [2020-10-29 09:15:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:05,259 INFO L93 Difference]: Finished difference Result 299 states and 353 transitions. [2020-10-29 09:15:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:15:05,260 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-29 09:15:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:05,262 INFO L225 Difference]: With dead ends: 299 [2020-10-29 09:15:05,262 INFO L226 Difference]: Without dead ends: 295 [2020-10-29 09:15:05,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:15:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-29 09:15:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 265. [2020-10-29 09:15:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-29 09:15:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 312 transitions. [2020-10-29 09:15:05,297 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 312 transitions. Word has length 45 [2020-10-29 09:15:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:05,297 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 312 transitions. [2020-10-29 09:15:05,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:15:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 312 transitions. [2020-10-29 09:15:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:15:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:05,298 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-29 09:15:05,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 09:15:05,299 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:05,299 INFO L82 PathProgramCache]: Analyzing trace with hash 431935350, now seen corresponding path program 1 times [2020-10-29 09:15:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303028717] [2020-10-29 09:15:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:15:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:06,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:06,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303028717] [2020-10-29 09:15:06,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:06,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:06,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789730404] [2020-10-29 09:15:06,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:06,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:06,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:06,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:06,430 INFO L87 Difference]: Start difference. First operand 265 states and 312 transitions. Second operand 13 states. [2020-10-29 09:15:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:07,431 INFO L93 Difference]: Finished difference Result 319 states and 378 transitions. [2020-10-29 09:15:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:15:07,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-29 09:15:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:07,433 INFO L225 Difference]: With dead ends: 319 [2020-10-29 09:15:07,433 INFO L226 Difference]: Without dead ends: 315 [2020-10-29 09:15:07,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:15:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-29 09:15:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 259. [2020-10-29 09:15:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-29 09:15:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 306 transitions. [2020-10-29 09:15:07,464 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 306 transitions. Word has length 45 [2020-10-29 09:15:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:07,464 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 306 transitions. [2020-10-29 09:15:07,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 306 transitions. [2020-10-29 09:15:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:15:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:07,466 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:07,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 09:15:07,466 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash 793228185, now seen corresponding path program 5 times [2020-10-29 09:15:07,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:07,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921891629] [2020-10-29 09:15:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:07,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:15:07,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:15:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:08,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921891629] [2020-10-29 09:15:08,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:08,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:08,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323279829] [2020-10-29 09:15:08,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:08,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:08,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:08,335 INFO L87 Difference]: Start difference. First operand 259 states and 306 transitions. Second operand 14 states. [2020-10-29 09:15:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:09,735 INFO L93 Difference]: Finished difference Result 359 states and 427 transitions. [2020-10-29 09:15:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:15:09,736 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-29 09:15:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:09,737 INFO L225 Difference]: With dead ends: 359 [2020-10-29 09:15:09,737 INFO L226 Difference]: Without dead ends: 355 [2020-10-29 09:15:09,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:15:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-29 09:15:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 267. [2020-10-29 09:15:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 09:15:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-10-29 09:15:09,773 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 45 [2020-10-29 09:15:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:09,774 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-10-29 09:15:09,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-10-29 09:15:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:15:09,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:09,775 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:09,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 09:15:09,775 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash 92905994, now seen corresponding path program 1 times [2020-10-29 09:15:09,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:09,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898368133] [2020-10-29 09:15:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1734 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:15:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:15:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:15:11,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898368133] [2020-10-29 09:15:11,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:11,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:15:11,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783652293] [2020-10-29 09:15:11,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:15:11,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:11,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:15:11,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:15:11,850 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 12 states. [2020-10-29 09:15:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:12,705 INFO L93 Difference]: Finished difference Result 375 states and 446 transitions. [2020-10-29 09:15:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:15:12,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-29 09:15:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:12,707 INFO L225 Difference]: With dead ends: 375 [2020-10-29 09:15:12,707 INFO L226 Difference]: Without dead ends: 327 [2020-10-29 09:15:12,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:15:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-29 09:15:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 281. [2020-10-29 09:15:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-29 09:15:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 332 transitions. [2020-10-29 09:15:12,749 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 332 transitions. Word has length 46 [2020-10-29 09:15:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:12,749 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 332 transitions. [2020-10-29 09:15:12,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:15:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 332 transitions. [2020-10-29 09:15:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:15:12,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:12,751 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:12,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 09:15:12,751 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2071503434, now seen corresponding path program 2 times [2020-10-29 09:15:12,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:12,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335752488] [2020-10-29 09:15:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:14,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:15:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-29 09:15:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:14,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:15:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:15:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:15,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335752488] [2020-10-29 09:15:15,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:15,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:15,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131519310] [2020-10-29 09:15:15,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:15,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:15,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:15,033 INFO L87 Difference]: Start difference. First operand 281 states and 332 transitions. Second operand 13 states. [2020-10-29 09:15:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:16,324 INFO L93 Difference]: Finished difference Result 336 states and 397 transitions. [2020-10-29 09:15:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:15:16,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-29 09:15:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:16,327 INFO L225 Difference]: With dead ends: 336 [2020-10-29 09:15:16,327 INFO L226 Difference]: Without dead ends: 332 [2020-10-29 09:15:16,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:15:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-29 09:15:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 288. [2020-10-29 09:15:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-29 09:15:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 341 transitions. [2020-10-29 09:15:16,368 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 341 transitions. Word has length 46 [2020-10-29 09:15:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:16,368 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 341 transitions. [2020-10-29 09:15:16,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 341 transitions. [2020-10-29 09:15:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:15:16,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:16,370 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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] [2020-10-29 09:15:16,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 09:15:16,370 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash 580010627, now seen corresponding path program 2 times [2020-10-29 09:15:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:16,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222650963] [2020-10-29 09:15:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:15:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:17,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:17,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222650963] [2020-10-29 09:15:17,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:17,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:17,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391330053] [2020-10-29 09:15:17,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:17,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:17,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:17,173 INFO L87 Difference]: Start difference. First operand 288 states and 341 transitions. Second operand 13 states. [2020-10-29 09:15:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:18,199 INFO L93 Difference]: Finished difference Result 394 states and 468 transitions. [2020-10-29 09:15:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:15:18,200 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-29 09:15:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:18,202 INFO L225 Difference]: With dead ends: 394 [2020-10-29 09:15:18,203 INFO L226 Difference]: Without dead ends: 343 [2020-10-29 09:15:18,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:15:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-29 09:15:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 306. [2020-10-29 09:15:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 09:15:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2020-10-29 09:15:18,234 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 46 [2020-10-29 09:15:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:18,234 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2020-10-29 09:15:18,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2020-10-29 09:15:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:15:18,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:18,235 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:18,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 09:15:18,235 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 530592783, now seen corresponding path program 6 times [2020-10-29 09:15:18,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:18,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177541615] [2020-10-29 09:15:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:15:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:18,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177541615] [2020-10-29 09:15:18,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:18,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:18,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062839470] [2020-10-29 09:15:18,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:18,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:18,848 INFO L87 Difference]: Start difference. First operand 306 states and 361 transitions. Second operand 13 states. [2020-10-29 09:15:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:20,463 INFO L93 Difference]: Finished difference Result 400 states and 472 transitions. [2020-10-29 09:15:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:15:20,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-10-29 09:15:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:20,465 INFO L225 Difference]: With dead ends: 400 [2020-10-29 09:15:20,465 INFO L226 Difference]: Without dead ends: 396 [2020-10-29 09:15:20,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:15:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-29 09:15:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 329. [2020-10-29 09:15:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-29 09:15:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 390 transitions. [2020-10-29 09:15:20,499 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 390 transitions. Word has length 47 [2020-10-29 09:15:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:20,499 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 390 transitions. [2020-10-29 09:15:20,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 390 transitions. [2020-10-29 09:15:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:15:20,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:20,501 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] [2020-10-29 09:15:20,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 09:15:20,502 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:20,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1177517178, now seen corresponding path program 1 times [2020-10-29 09:15:20,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:20,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726522999] [2020-10-29 09:15:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:20,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:15:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:21,331 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-29 09:15:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:21,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726522999] [2020-10-29 09:15:21,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:21,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:21,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780022773] [2020-10-29 09:15:21,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:21,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:21,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:21,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:21,536 INFO L87 Difference]: Start difference. First operand 329 states and 390 transitions. Second operand 13 states. [2020-10-29 09:15:22,260 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-29 09:15:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:22,664 INFO L93 Difference]: Finished difference Result 399 states and 471 transitions. [2020-10-29 09:15:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:15:22,665 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-29 09:15:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:22,666 INFO L225 Difference]: With dead ends: 399 [2020-10-29 09:15:22,666 INFO L226 Difference]: Without dead ends: 375 [2020-10-29 09:15:22,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:15:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-29 09:15:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 341. [2020-10-29 09:15:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-29 09:15:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2020-10-29 09:15:22,716 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 48 [2020-10-29 09:15:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:22,716 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2020-10-29 09:15:22,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:22,716 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2020-10-29 09:15:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:15:22,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:22,718 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] [2020-10-29 09:15:22,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 09:15:22,718 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:22,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1676437478, now seen corresponding path program 1 times [2020-10-29 09:15:22,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:22,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817413892] [2020-10-29 09:15:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:23,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:23,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:15:23,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-29 09:15:23,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:23,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:15:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:15:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:24,296 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-29 09:15:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:24,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:24,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:24,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:24,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:24,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:24,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817413892] [2020-10-29 09:15:24,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:24,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:24,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576176008] [2020-10-29 09:15:24,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:24,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:24,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:24,497 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand 13 states. [2020-10-29 09:15:25,341 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-29 09:15:25,492 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-29 09:15:25,807 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-29 09:15:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:25,921 INFO L93 Difference]: Finished difference Result 376 states and 441 transitions. [2020-10-29 09:15:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:15:25,922 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-29 09:15:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:25,924 INFO L225 Difference]: With dead ends: 376 [2020-10-29 09:15:25,924 INFO L226 Difference]: Without dead ends: 372 [2020-10-29 09:15:25,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:15:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-29 09:15:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 345. [2020-10-29 09:15:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-29 09:15:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2020-10-29 09:15:25,956 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 49 [2020-10-29 09:15:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:25,956 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2020-10-29 09:15:25,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2020-10-29 09:15:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:15:25,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:25,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:25,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 09:15:25,958 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:25,959 INFO L82 PathProgramCache]: Analyzing trace with hash -284202544, now seen corresponding path program 2 times [2020-10-29 09:15:25,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:25,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073668775] [2020-10-29 09:15:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:26,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:15:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:26,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073668775] [2020-10-29 09:15:26,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:26,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:26,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228540151] [2020-10-29 09:15:26,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:26,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:26,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:26,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:26,938 INFO L87 Difference]: Start difference. First operand 345 states and 407 transitions. Second operand 14 states. [2020-10-29 09:15:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:28,276 INFO L93 Difference]: Finished difference Result 402 states and 476 transitions. [2020-10-29 09:15:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:28,277 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-29 09:15:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:28,279 INFO L225 Difference]: With dead ends: 402 [2020-10-29 09:15:28,279 INFO L226 Difference]: Without dead ends: 398 [2020-10-29 09:15:28,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:15:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-29 09:15:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 354. [2020-10-29 09:15:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-29 09:15:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 418 transitions. [2020-10-29 09:15:28,316 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 418 transitions. Word has length 49 [2020-10-29 09:15:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:28,316 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 418 transitions. [2020-10-29 09:15:28,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 418 transitions. [2020-10-29 09:15:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:15:28,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:28,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:28,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 09:15:28,318 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash -677229554, now seen corresponding path program 2 times [2020-10-29 09:15:28,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:28,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113738864] [2020-10-29 09:15:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:15:30,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:30,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2548 [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:15:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:31,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113738864] [2020-10-29 09:15:31,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:31,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:15:31,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300362678] [2020-10-29 09:15:31,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:15:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:15:31,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:15:31,168 INFO L87 Difference]: Start difference. First operand 354 states and 418 transitions. Second operand 11 states. [2020-10-29 09:15:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:32,120 INFO L93 Difference]: Finished difference Result 398 states and 467 transitions. [2020-10-29 09:15:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:15:32,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-29 09:15:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:32,124 INFO L225 Difference]: With dead ends: 398 [2020-10-29 09:15:32,124 INFO L226 Difference]: Without dead ends: 371 [2020-10-29 09:15:32,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:15:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-29 09:15:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 354. [2020-10-29 09:15:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-29 09:15:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 417 transitions. [2020-10-29 09:15:32,164 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 417 transitions. Word has length 49 [2020-10-29 09:15:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:32,164 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 417 transitions. [2020-10-29 09:15:32,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:15:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 417 transitions. [2020-10-29 09:15:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:15:32,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:32,166 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:32,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 09:15:32,166 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash -3338258, now seen corresponding path program 7 times [2020-10-29 09:15:32,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:32,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904524087] [2020-10-29 09:15:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:15:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:33,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:33,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904524087] [2020-10-29 09:15:33,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:33,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:15:33,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685557792] [2020-10-29 09:15:33,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:15:33,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:15:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:15:33,326 INFO L87 Difference]: Start difference. First operand 354 states and 417 transitions. Second operand 15 states. [2020-10-29 09:15:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:34,700 INFO L93 Difference]: Finished difference Result 406 states and 482 transitions. [2020-10-29 09:15:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:34,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-29 09:15:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:34,703 INFO L225 Difference]: With dead ends: 406 [2020-10-29 09:15:34,703 INFO L226 Difference]: Without dead ends: 402 [2020-10-29 09:15:34,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:15:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-29 09:15:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 316. [2020-10-29 09:15:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-29 09:15:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 370 transitions. [2020-10-29 09:15:34,736 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 370 transitions. Word has length 49 [2020-10-29 09:15:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:34,736 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 370 transitions. [2020-10-29 09:15:34,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:15:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 370 transitions. [2020-10-29 09:15:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:15:34,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:34,737 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:34,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 09:15:34,737 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1335742196, now seen corresponding path program 1 times [2020-10-29 09:15:34,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:34,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870685316] [2020-10-29 09:15:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:15:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:15:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:35,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:35,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:35,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870685316] [2020-10-29 09:15:35,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:35,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:35,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347912675] [2020-10-29 09:15:35,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:35,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:35,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:35,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:35,574 INFO L87 Difference]: Start difference. First operand 316 states and 370 transitions. Second operand 13 states. [2020-10-29 09:15:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:36,797 INFO L93 Difference]: Finished difference Result 360 states and 418 transitions. [2020-10-29 09:15:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:15:36,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-29 09:15:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:36,800 INFO L225 Difference]: With dead ends: 360 [2020-10-29 09:15:36,801 INFO L226 Difference]: Without dead ends: 356 [2020-10-29 09:15:36,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:15:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-29 09:15:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 339. [2020-10-29 09:15:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-29 09:15:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 394 transitions. [2020-10-29 09:15:36,837 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 394 transitions. Word has length 50 [2020-10-29 09:15:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:36,838 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 394 transitions. [2020-10-29 09:15:36,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 394 transitions. [2020-10-29 09:15:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:15:36,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:36,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:36,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 09:15:36,839 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:36,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:36,839 INFO L82 PathProgramCache]: Analyzing trace with hash -695579940, now seen corresponding path program 2 times [2020-10-29 09:15:36,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:36,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50540492] [2020-10-29 09:15:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:37,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:37,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:15:37,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-29 09:15:37,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:37,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:15:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:38,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50540492] [2020-10-29 09:15:38,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:38,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:38,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488811061] [2020-10-29 09:15:38,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:38,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:38,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:38,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:38,243 INFO L87 Difference]: Start difference. First operand 339 states and 394 transitions. Second operand 14 states. [2020-10-29 09:15:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:39,621 INFO L93 Difference]: Finished difference Result 385 states and 449 transitions. [2020-10-29 09:15:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:39,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-29 09:15:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:39,623 INFO L225 Difference]: With dead ends: 385 [2020-10-29 09:15:39,623 INFO L226 Difference]: Without dead ends: 373 [2020-10-29 09:15:39,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:15:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-29 09:15:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 339. [2020-10-29 09:15:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-29 09:15:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 393 transitions. [2020-10-29 09:15:39,667 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 393 transitions. Word has length 50 [2020-10-29 09:15:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:39,667 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 393 transitions. [2020-10-29 09:15:39,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 393 transitions. [2020-10-29 09:15:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:15:39,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:39,668 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:39,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 09:15:39,668 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2084196267, now seen corresponding path program 3 times [2020-10-29 09:15:39,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:39,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390016256] [2020-10-29 09:15:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:42,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2802 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:15:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:42,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:15:42,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390016256] [2020-10-29 09:15:42,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:42,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:42,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144354754] [2020-10-29 09:15:42,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:42,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:42,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:42,924 INFO L87 Difference]: Start difference. First operand 339 states and 393 transitions. Second operand 13 states. [2020-10-29 09:15:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:43,821 INFO L93 Difference]: Finished difference Result 443 states and 523 transitions. [2020-10-29 09:15:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:15:43,822 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-29 09:15:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:43,824 INFO L225 Difference]: With dead ends: 443 [2020-10-29 09:15:43,824 INFO L226 Difference]: Without dead ends: 395 [2020-10-29 09:15:43,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:15:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-29 09:15:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 357. [2020-10-29 09:15:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-29 09:15:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 413 transitions. [2020-10-29 09:15:43,859 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 413 transitions. Word has length 50 [2020-10-29 09:15:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:43,860 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 413 transitions. [2020-10-29 09:15:43,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 413 transitions. [2020-10-29 09:15:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:15:43,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:43,861 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:43,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 09:15:43,861 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1840943253, now seen corresponding path program 4 times [2020-10-29 09:15:43,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:43,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005633297] [2020-10-29 09:15:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:46,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:46,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:15:46,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2324 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:15:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:46,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:46,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:46,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005633297] [2020-10-29 09:15:46,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:46,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:46,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522340600] [2020-10-29 09:15:46,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:46,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:46,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:46,889 INFO L87 Difference]: Start difference. First operand 357 states and 413 transitions. Second operand 14 states. [2020-10-29 09:15:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:48,291 INFO L93 Difference]: Finished difference Result 492 states and 575 transitions. [2020-10-29 09:15:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:48,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-29 09:15:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:48,294 INFO L225 Difference]: With dead ends: 492 [2020-10-29 09:15:48,295 INFO L226 Difference]: Without dead ends: 444 [2020-10-29 09:15:48,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:15:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-29 09:15:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 380. [2020-10-29 09:15:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-29 09:15:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 438 transitions. [2020-10-29 09:15:48,354 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 438 transitions. Word has length 50 [2020-10-29 09:15:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:48,354 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 438 transitions. [2020-10-29 09:15:48,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 438 transitions. [2020-10-29 09:15:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:15:48,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:48,355 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:48,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 09:15:48,356 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:48,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:48,356 INFO L82 PathProgramCache]: Analyzing trace with hash -475426603, now seen corresponding path program 5 times [2020-10-29 09:15:48,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:48,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028280668] [2020-10-29 09:15:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:49,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:15:49,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-29 09:15:49,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:49,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:15:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:49,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:49,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028280668] [2020-10-29 09:15:49,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:49,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046888622] [2020-10-29 09:15:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:49,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:49,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:49,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:49,822 INFO L87 Difference]: Start difference. First operand 380 states and 438 transitions. Second operand 14 states. [2020-10-29 09:15:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:50,928 INFO L93 Difference]: Finished difference Result 437 states and 507 transitions. [2020-10-29 09:15:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:15:50,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-29 09:15:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:50,932 INFO L225 Difference]: With dead ends: 437 [2020-10-29 09:15:50,932 INFO L226 Difference]: Without dead ends: 433 [2020-10-29 09:15:50,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:15:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-29 09:15:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 387. [2020-10-29 09:15:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-29 09:15:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 447 transitions. [2020-10-29 09:15:50,983 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 447 transitions. Word has length 50 [2020-10-29 09:15:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:50,984 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 447 transitions. [2020-10-29 09:15:50,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 447 transitions. [2020-10-29 09:15:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:15:50,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:50,984 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, 1] [2020-10-29 09:15:50,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 09:15:50,985 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash 515259611, now seen corresponding path program 1 times [2020-10-29 09:15:50,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:50,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341371570] [2020-10-29 09:15:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:15:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:52,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:52,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:52,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:52,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341371570] [2020-10-29 09:15:52,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:52,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:52,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853245787] [2020-10-29 09:15:52,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:52,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:52,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:52,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:52,533 INFO L87 Difference]: Start difference. First operand 387 states and 447 transitions. Second operand 13 states. [2020-10-29 09:15:53,399 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-29 09:15:53,721 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-29 09:15:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:53,868 INFO L93 Difference]: Finished difference Result 408 states and 470 transitions. [2020-10-29 09:15:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:15:53,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 09:15:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:53,871 INFO L225 Difference]: With dead ends: 408 [2020-10-29 09:15:53,872 INFO L226 Difference]: Without dead ends: 404 [2020-10-29 09:15:53,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:15:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-29 09:15:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 374. [2020-10-29 09:15:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-29 09:15:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 433 transitions. [2020-10-29 09:15:53,932 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 433 transitions. Word has length 51 [2020-10-29 09:15:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:53,932 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 433 transitions. [2020-10-29 09:15:53,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 433 transitions. [2020-10-29 09:15:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:15:53,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:53,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:53,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-29 09:15:53,934 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:53,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:53,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1788772677, now seen corresponding path program 2 times [2020-10-29 09:15:53,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:53,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812587688] [2020-10-29 09:15:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:15:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:55,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812587688] [2020-10-29 09:15:55,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:55,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:55,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423430094] [2020-10-29 09:15:55,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:55,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:55,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:55,368 INFO L87 Difference]: Start difference. First operand 374 states and 433 transitions. Second operand 14 states. [2020-10-29 09:15:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:56,963 INFO L93 Difference]: Finished difference Result 429 states and 496 transitions. [2020-10-29 09:15:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:15:56,964 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-29 09:15:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:56,967 INFO L225 Difference]: With dead ends: 429 [2020-10-29 09:15:56,967 INFO L226 Difference]: Without dead ends: 425 [2020-10-29 09:15:56,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:15:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-29 09:15:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 368. [2020-10-29 09:15:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-10-29 09:15:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 427 transitions. [2020-10-29 09:15:57,016 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 427 transitions. Word has length 51 [2020-10-29 09:15:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:57,016 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 427 transitions. [2020-10-29 09:15:57,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 427 transitions. [2020-10-29 09:15:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:15:57,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:57,018 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:57,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-29 09:15:57,018 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash -465580252, now seen corresponding path program 8 times [2020-10-29 09:15:57,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:57,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340727258] [2020-10-29 09:15:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:15:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:15:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:57,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:57,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:57,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:57,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:57,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:58,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340727258] [2020-10-29 09:15:58,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:58,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:15:58,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684432257] [2020-10-29 09:15:58,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:15:58,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:58,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:15:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:15:58,012 INFO L87 Difference]: Start difference. First operand 368 states and 427 transitions. Second operand 15 states. [2020-10-29 09:15:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:59,455 INFO L93 Difference]: Finished difference Result 442 states and 515 transitions. [2020-10-29 09:15:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:59,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-29 09:15:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:59,458 INFO L225 Difference]: With dead ends: 442 [2020-10-29 09:15:59,458 INFO L226 Difference]: Without dead ends: 438 [2020-10-29 09:15:59,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:15:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-29 09:15:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 338. [2020-10-29 09:15:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-29 09:15:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 398 transitions. [2020-10-29 09:15:59,501 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 398 transitions. Word has length 51 [2020-10-29 09:15:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:59,501 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 398 transitions. [2020-10-29 09:15:59,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:15:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 398 transitions. [2020-10-29 09:15:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:15:59,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:59,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:59,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-29 09:15:59,503 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:59,503 INFO L82 PathProgramCache]: Analyzing trace with hash -475391895, now seen corresponding path program 1 times [2020-10-29 09:15:59,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:59,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112724024] [2020-10-29 09:15:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:15:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:00,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:00,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112724024] [2020-10-29 09:16:00,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:00,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:16:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226375281] [2020-10-29 09:16:00,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:16:00,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:16:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:16:00,354 INFO L87 Difference]: Start difference. First operand 338 states and 398 transitions. Second operand 12 states. [2020-10-29 09:16:01,488 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-29 09:16:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:02,186 INFO L93 Difference]: Finished difference Result 380 states and 444 transitions. [2020-10-29 09:16:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:16:02,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-29 09:16:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:02,189 INFO L225 Difference]: With dead ends: 380 [2020-10-29 09:16:02,189 INFO L226 Difference]: Without dead ends: 376 [2020-10-29 09:16:02,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:16:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-29 09:16:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358. [2020-10-29 09:16:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-29 09:16:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 420 transitions. [2020-10-29 09:16:02,257 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 420 transitions. Word has length 52 [2020-10-29 09:16:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:02,258 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 420 transitions. [2020-10-29 09:16:02,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:16:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 420 transitions. [2020-10-29 09:16:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:16:02,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:02,259 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:02,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-29 09:16:02,260 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2082002387, now seen corresponding path program 1 times [2020-10-29 09:16:02,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:02,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826322587] [2020-10-29 09:16:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:05,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:05,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3549 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:16:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:06,523 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-29 09:16:06,953 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-29 09:16:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:07,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:07,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:07,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:07,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:16:07,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826322587] [2020-10-29 09:16:07,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:07,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:07,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480951540] [2020-10-29 09:16:07,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:07,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:07,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:07,260 INFO L87 Difference]: Start difference. First operand 358 states and 420 transitions. Second operand 15 states. [2020-10-29 09:16:07,550 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 09:16:07,834 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-10-29 09:16:08,523 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-29 09:16:08,828 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-29 09:16:09,015 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-29 09:16:09,329 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-29 09:16:09,744 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-29 09:16:09,989 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-29 09:16:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:10,377 INFO L93 Difference]: Finished difference Result 479 states and 572 transitions. [2020-10-29 09:16:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:16:10,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-29 09:16:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:10,380 INFO L225 Difference]: With dead ends: 479 [2020-10-29 09:16:10,380 INFO L226 Difference]: Without dead ends: 455 [2020-10-29 09:16:10,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:16:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-29 09:16:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 405. [2020-10-29 09:16:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-29 09:16:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 484 transitions. [2020-10-29 09:16:10,422 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 484 transitions. Word has length 52 [2020-10-29 09:16:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:10,422 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 484 transitions. [2020-10-29 09:16:10,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 484 transitions. [2020-10-29 09:16:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:16:10,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:10,424 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:10,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-29 09:16:10,424 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash 393058645, now seen corresponding path program 1 times [2020-10-29 09:16:10,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:10,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483190647] [2020-10-29 09:16:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:11,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:11,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:16:11,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:16:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:11,787 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-29 09:16:12,002 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-29 09:16:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:12,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:12,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:12,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483190647] [2020-10-29 09:16:12,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:12,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:12,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146119421] [2020-10-29 09:16:12,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:12,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:12,249 INFO L87 Difference]: Start difference. First operand 405 states and 484 transitions. Second operand 15 states. [2020-10-29 09:16:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:14,043 INFO L93 Difference]: Finished difference Result 499 states and 594 transitions. [2020-10-29 09:16:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:16:14,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-29 09:16:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:14,045 INFO L225 Difference]: With dead ends: 499 [2020-10-29 09:16:14,045 INFO L226 Difference]: Without dead ends: 475 [2020-10-29 09:16:14,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:16:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-29 09:16:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 406. [2020-10-29 09:16:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-29 09:16:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 485 transitions. [2020-10-29 09:16:14,102 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 485 transitions. Word has length 52 [2020-10-29 09:16:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:14,102 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 485 transitions. [2020-10-29 09:16:14,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 485 transitions. [2020-10-29 09:16:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:14,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:14,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:14,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-29 09:16:14,103 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash -357671111, now seen corresponding path program 1 times [2020-10-29 09:16:14,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:14,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231910641] [2020-10-29 09:16:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:16:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:16:19,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231910641] [2020-10-29 09:16:19,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:19,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:19,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165141560] [2020-10-29 09:16:19,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:19,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:19,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:19,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:19,791 INFO L87 Difference]: Start difference. First operand 406 states and 485 transitions. Second operand 15 states. [2020-10-29 09:16:21,523 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-29 09:16:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:21,966 INFO L93 Difference]: Finished difference Result 461 states and 546 transitions. [2020-10-29 09:16:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:16:21,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 09:16:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:21,969 INFO L225 Difference]: With dead ends: 461 [2020-10-29 09:16:21,970 INFO L226 Difference]: Without dead ends: 457 [2020-10-29 09:16:21,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:16:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-29 09:16:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 424. [2020-10-29 09:16:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-29 09:16:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 505 transitions. [2020-10-29 09:16:22,017 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 505 transitions. Word has length 53 [2020-10-29 09:16:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:22,017 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 505 transitions. [2020-10-29 09:16:22,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:22,018 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 505 transitions. [2020-10-29 09:16:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:22,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:22,019 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:22,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-29 09:16:22,019 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:22,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1175319561, now seen corresponding path program 1 times [2020-10-29 09:16:22,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:22,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189352853] [2020-10-29 09:16:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:16:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:16:23,681 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-29 09:16:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:23,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:23,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189352853] [2020-10-29 09:16:23,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:23,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:23,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529701072] [2020-10-29 09:16:23,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:23,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:23,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:23,856 INFO L87 Difference]: Start difference. First operand 424 states and 505 transitions. Second operand 15 states. [2020-10-29 09:16:24,895 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-29 09:16:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:25,363 INFO L93 Difference]: Finished difference Result 462 states and 548 transitions. [2020-10-29 09:16:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:16:25,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 09:16:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:25,366 INFO L225 Difference]: With dead ends: 462 [2020-10-29 09:16:25,366 INFO L226 Difference]: Without dead ends: 458 [2020-10-29 09:16:25,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:16:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-29 09:16:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 414. [2020-10-29 09:16:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-29 09:16:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 494 transitions. [2020-10-29 09:16:25,411 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 494 transitions. Word has length 53 [2020-10-29 09:16:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:25,411 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 494 transitions. [2020-10-29 09:16:25,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:25,411 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 494 transitions. [2020-10-29 09:16:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:25,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:25,412 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:16:25,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-29 09:16:25,412 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash 758023843, now seen corresponding path program 1 times [2020-10-29 09:16:25,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:25,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869397137] [2020-10-29 09:16:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:16:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:16:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869397137] [2020-10-29 09:16:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:26,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:16:26,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450481294] [2020-10-29 09:16:26,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:16:26,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:26,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:16:26,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:16:26,893 INFO L87 Difference]: Start difference. First operand 414 states and 494 transitions. Second operand 12 states. [2020-10-29 09:16:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:27,889 INFO L93 Difference]: Finished difference Result 566 states and 674 transitions. [2020-10-29 09:16:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:16:27,890 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-29 09:16:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:27,893 INFO L225 Difference]: With dead ends: 566 [2020-10-29 09:16:27,893 INFO L226 Difference]: Without dead ends: 527 [2020-10-29 09:16:27,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:16:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-29 09:16:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 483. [2020-10-29 09:16:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-29 09:16:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 574 transitions. [2020-10-29 09:16:27,943 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 574 transitions. Word has length 53 [2020-10-29 09:16:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:27,943 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 574 transitions. [2020-10-29 09:16:27,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:16:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 574 transitions. [2020-10-29 09:16:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:27,944 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:16:27,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-29 09:16:27,945 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash 364996833, now seen corresponding path program 2 times [2020-10-29 09:16:27,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:27,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926524903] [2020-10-29 09:16:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:16:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:29,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:29,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926524903] [2020-10-29 09:16:29,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:29,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:29,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116041736] [2020-10-29 09:16:29,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:29,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:29,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:29,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:29,182 INFO L87 Difference]: Start difference. First operand 483 states and 574 transitions. Second operand 15 states. [2020-10-29 09:16:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:30,952 INFO L93 Difference]: Finished difference Result 580 states and 694 transitions. [2020-10-29 09:16:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:16:30,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 09:16:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:30,956 INFO L225 Difference]: With dead ends: 580 [2020-10-29 09:16:30,956 INFO L226 Difference]: Without dead ends: 576 [2020-10-29 09:16:30,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:16:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-29 09:16:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 520. [2020-10-29 09:16:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-29 09:16:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 621 transitions. [2020-10-29 09:16:31,012 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 621 transitions. Word has length 53 [2020-10-29 09:16:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:31,013 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 621 transitions. [2020-10-29 09:16:31,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 621 transitions. [2020-10-29 09:16:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:31,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:31,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:31,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-29 09:16:31,014 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:31,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1302880486, now seen corresponding path program 9 times [2020-10-29 09:16:31,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:31,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904129050] [2020-10-29 09:16:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:31,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:31,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:31,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-29 09:16:31,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:31,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:16:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:31,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904129050] [2020-10-29 09:16:31,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:31,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:16:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354589599] [2020-10-29 09:16:31,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:16:31,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:16:31,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:16:31,724 INFO L87 Difference]: Start difference. First operand 520 states and 621 transitions. Second operand 13 states. [2020-10-29 09:16:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:33,513 INFO L93 Difference]: Finished difference Result 615 states and 735 transitions. [2020-10-29 09:16:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:16:33,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-29 09:16:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:33,516 INFO L225 Difference]: With dead ends: 615 [2020-10-29 09:16:33,516 INFO L226 Difference]: Without dead ends: 558 [2020-10-29 09:16:33,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:16:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-29 09:16:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 519. [2020-10-29 09:16:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-29 09:16:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 618 transitions. [2020-10-29 09:16:33,578 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 618 transitions. Word has length 53 [2020-10-29 09:16:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:33,579 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 618 transitions. [2020-10-29 09:16:33,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:16:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 618 transitions. [2020-10-29 09:16:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:33,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:33,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:33,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-29 09:16:33,581 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -658114475, now seen corresponding path program 1 times [2020-10-29 09:16:33,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:33,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148135714] [2020-10-29 09:16:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:16:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:39,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:16:39,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148135714] [2020-10-29 09:16:39,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:39,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:39,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216897647] [2020-10-29 09:16:39,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:39,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:39,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:39,188 INFO L87 Difference]: Start difference. First operand 519 states and 618 transitions. Second operand 15 states. [2020-10-29 09:16:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:41,073 INFO L93 Difference]: Finished difference Result 589 states and 701 transitions. [2020-10-29 09:16:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:16:41,073 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 09:16:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:41,076 INFO L225 Difference]: With dead ends: 589 [2020-10-29 09:16:41,076 INFO L226 Difference]: Without dead ends: 585 [2020-10-29 09:16:41,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:16:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-29 09:16:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 533. [2020-10-29 09:16:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-29 09:16:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 634 transitions. [2020-10-29 09:16:41,137 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 634 transitions. Word has length 53 [2020-10-29 09:16:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:41,137 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 634 transitions. [2020-10-29 09:16:41,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 634 transitions. [2020-10-29 09:16:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:41,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:41,138 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:41,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-29 09:16:41,138 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:41,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1947909079, now seen corresponding path program 1 times [2020-10-29 09:16:41,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:41,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366878024] [2020-10-29 09:16:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:41,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:41,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:16:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:42,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:42,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366878024] [2020-10-29 09:16:42,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:42,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:42,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448108995] [2020-10-29 09:16:42,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:42,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:42,327 INFO L87 Difference]: Start difference. First operand 533 states and 634 transitions. Second operand 15 states. [2020-10-29 09:16:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:43,540 INFO L93 Difference]: Finished difference Result 602 states and 716 transitions. [2020-10-29 09:16:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:16:43,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 09:16:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:43,544 INFO L225 Difference]: With dead ends: 602 [2020-10-29 09:16:43,545 INFO L226 Difference]: Without dead ends: 598 [2020-10-29 09:16:43,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:16:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-29 09:16:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 534. [2020-10-29 09:16:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-29 09:16:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 635 transitions. [2020-10-29 09:16:43,604 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 635 transitions. Word has length 53 [2020-10-29 09:16:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:43,605 INFO L481 AbstractCegarLoop]: Abstraction has 534 states and 635 transitions. [2020-10-29 09:16:43,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 635 transitions. [2020-10-29 09:16:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:43,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:43,606 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2020-10-29 09:16:43,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-29 09:16:43,607 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1018463598, now seen corresponding path program 3 times [2020-10-29 09:16:43,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:43,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822143954] [2020-10-29 09:16:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:16:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:16:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:44,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822143954] [2020-10-29 09:16:44,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:44,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:16:44,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28626998] [2020-10-29 09:16:44,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:16:44,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:16:44,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:16:44,669 INFO L87 Difference]: Start difference. First operand 534 states and 635 transitions. Second operand 14 states. [2020-10-29 09:16:46,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:46,024 INFO L93 Difference]: Finished difference Result 655 states and 781 transitions. [2020-10-29 09:16:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:16:46,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-29 09:16:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:46,028 INFO L225 Difference]: With dead ends: 655 [2020-10-29 09:16:46,028 INFO L226 Difference]: Without dead ends: 606 [2020-10-29 09:16:46,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:16:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-29 09:16:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 562. [2020-10-29 09:16:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-29 09:16:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 666 transitions. [2020-10-29 09:16:46,088 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 666 transitions. Word has length 53 [2020-10-29 09:16:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:46,089 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 666 transitions. [2020-10-29 09:16:46,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:16:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 666 transitions. [2020-10-29 09:16:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:16:46,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:46,090 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:46,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-29 09:16:46,090 INFO L429 AbstractCegarLoop]: === Iteration 76 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash 625436588, now seen corresponding path program 2 times [2020-10-29 09:16:46,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:46,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936265308] [2020-10-29 09:16:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:16:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:16:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:48,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:48,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936265308] [2020-10-29 09:16:48,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:48,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:16:48,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026661376] [2020-10-29 09:16:48,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:16:48,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:16:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:16:48,495 INFO L87 Difference]: Start difference. First operand 562 states and 666 transitions. Second operand 13 states. [2020-10-29 09:16:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:49,611 INFO L93 Difference]: Finished difference Result 638 states and 760 transitions. [2020-10-29 09:16:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:16:49,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-29 09:16:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:49,614 INFO L225 Difference]: With dead ends: 638 [2020-10-29 09:16:49,614 INFO L226 Difference]: Without dead ends: 570 [2020-10-29 09:16:49,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:16:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-29 09:16:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 561. [2020-10-29 09:16:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 09:16:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 660 transitions. [2020-10-29 09:16:49,676 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 660 transitions. Word has length 53 [2020-10-29 09:16:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:49,676 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 660 transitions. [2020-10-29 09:16:49,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:16:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 660 transitions. [2020-10-29 09:16:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:16:49,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:49,678 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:49,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-29 09:16:49,678 INFO L429 AbstractCegarLoop]: === Iteration 77 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:49,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:49,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1726095425, now seen corresponding path program 2 times [2020-10-29 09:16:49,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:49,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327895159] [2020-10-29 09:16:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:50,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:16:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:16:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:50,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:50,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:50,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:50,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:50,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327895159] [2020-10-29 09:16:50,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:50,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:50,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414611343] [2020-10-29 09:16:50,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:50,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:50,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:50,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:50,563 INFO L87 Difference]: Start difference. First operand 561 states and 660 transitions. Second operand 15 states. [2020-10-29 09:16:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:52,052 INFO L93 Difference]: Finished difference Result 653 states and 761 transitions. [2020-10-29 09:16:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:16:52,052 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-29 09:16:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:52,054 INFO L225 Difference]: With dead ends: 653 [2020-10-29 09:16:52,055 INFO L226 Difference]: Without dead ends: 649 [2020-10-29 09:16:52,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:16:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-29 09:16:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 584. [2020-10-29 09:16:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-29 09:16:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 684 transitions. [2020-10-29 09:16:52,136 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 684 transitions. Word has length 54 [2020-10-29 09:16:52,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:52,137 INFO L481 AbstractCegarLoop]: Abstraction has 584 states and 684 transitions. [2020-10-29 09:16:52,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 684 transitions. [2020-10-29 09:16:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:16:52,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:52,138 INFO L422 BasicCegarLoop]: trace histogram [4, 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 09:16:52,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-29 09:16:52,138 INFO L429 AbstractCegarLoop]: === Iteration 78 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2045235733, now seen corresponding path program 2 times [2020-10-29 09:16:52,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:52,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733078101] [2020-10-29 09:16:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:16:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:16:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:53,642 ERROR L253 erpolLogProxyWrapper]: Interpolant 40 not inductive [2020-10-29 09:16:53,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-29 09:16:53,644 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:16:53,649 INFO L168 Benchmark]: Toolchain (without parser) took 179315.90 ms. Allocated memory was 165.7 MB in the beginning and 716.2 MB in the end (delta: 550.5 MB). Free memory was 140.8 MB in the beginning and 466.6 MB in the end (delta: -325.9 MB). Peak memory consumption was 430.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:16:53,649 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:16:53,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.67 ms. Allocated memory is still 165.7 MB. Free memory was 140.3 MB in the beginning and 117.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:16:53,650 INFO L168 Benchmark]: Boogie Preprocessor took 108.11 ms. Allocated memory is still 165.7 MB. Free memory was 117.8 MB in the beginning and 148.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:16:53,650 INFO L168 Benchmark]: RCFGBuilder took 866.77 ms. Allocated memory is still 165.7 MB. Free memory was 148.1 MB in the beginning and 142.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:16:53,650 INFO L168 Benchmark]: TraceAbstraction took 177665.64 ms. Allocated memory was 165.7 MB in the beginning and 716.2 MB in the end (delta: 550.5 MB). Free memory was 142.4 MB in the beginning and 466.6 MB in the end (delta: -324.3 MB). Peak memory consumption was 430.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:16:53,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 660.67 ms. Allocated memory is still 165.7 MB. Free memory was 140.3 MB in the beginning and 117.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.11 ms. Allocated memory is still 165.7 MB. Free memory was 117.8 MB in the beginning and 148.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 866.77 ms. Allocated memory is still 165.7 MB. Free memory was 148.1 MB in the beginning and 142.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 177665.64 ms. Allocated memory was 165.7 MB in the beginning and 716.2 MB in the end (delta: 550.5 MB). Free memory was 142.4 MB in the beginning and 466.6 MB in the end (delta: -324.3 MB). Peak memory consumption was 430.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...