/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:33:28,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:33:28,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:33:28,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:33:28,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:33:28,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:33:28,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:33:28,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:33:28,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:33:28,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:33:28,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:33:28,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:33:28,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:33:28,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:33:28,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:33:28,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:33:28,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:33:28,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:33:28,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:33:28,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:33:28,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:33:28,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:33:28,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:33:28,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:33:28,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:33:28,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:33:28,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:33:28,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:33:28,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:33:28,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:33:28,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:33:28,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:33:28,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:33:28,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:33:28,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:33:28,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:33:28,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:33:28,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:33:28,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:33:28,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:33:28,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:33:28,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:33:28,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:33:28,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:33:28,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:33:28,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:33:28,426 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:33:28,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:33:28,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:33:28,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:33:28,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:33:28,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:33:28,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:33:28,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:33:28,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:33:28,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:33:28,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:33:28,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:33:28,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:33:28,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:33:28,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:33:28,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:33:28,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:33:28,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:33:28,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:33:28,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:33:28,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:33:28,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:33:28,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:33:28,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:33:28,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:33:28,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:33:28,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:33:28,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:33:28,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:33:28,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:33:28,937 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:33:28,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-28 14:33:29,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7179743e/8c98f6286ad8490ba3c88741d00cd6a4/FLAGb203fab91 [2020-10-28 14:33:29,829 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:33:29,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-28 14:33:29,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7179743e/8c98f6286ad8490ba3c88741d00cd6a4/FLAGb203fab91 [2020-10-28 14:33:30,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7179743e/8c98f6286ad8490ba3c88741d00cd6a4 [2020-10-28 14:33:30,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:33:30,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:33:30,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:33:30,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:33:30,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:33:30,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6293fa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30, skipping insertion in model container [2020-10-28 14:33:30,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:33:30,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:33:30,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:33:30,572 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:33:30,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:33:30,716 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:33:30,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30 WrapperNode [2020-10-28 14:33:30,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:33:30,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:33:30,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:33:30,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:33:30,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... [2020-10-28 14:33:30,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:33:30,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:33:30,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:33:30,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:33:30,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:33:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:33:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:33:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:33:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:33:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:33:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:33:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:33:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:33:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:33:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:33:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:33:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:33:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:33:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:33:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:33:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:33:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:33:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:33:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:33:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:33:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:33:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:33:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:33:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:33:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:33:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:33:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:33:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:33:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:33:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:33:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:33:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:33:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:33:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:33:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:33:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:33:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:33:31,786 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:33:31,786 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-28 14:33:31,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:33:31 BoogieIcfgContainer [2020-10-28 14:33:31,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:33:31,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:33:31,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:33:31,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:33:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:33:30" (1/3) ... [2020-10-28 14:33:31,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ad6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:33:31, skipping insertion in model container [2020-10-28 14:33:31,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:30" (2/3) ... [2020-10-28 14:33:31,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ad6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:33:31, skipping insertion in model container [2020-10-28 14:33:31,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:33:31" (3/3) ... [2020-10-28 14:33:31,799 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2020-10-28 14:33:31,812 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:33:31,818 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:33:31,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:33:31,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:33:31,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:33:31,864 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:33:31,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:33:31,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:33:31,865 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:33:31,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:33:31,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:33:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-28 14:33:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 14:33:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:31,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:31,893 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:31,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1889217750, now seen corresponding path program 1 times [2020-10-28 14:33:31,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:31,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111116712] [2020-10-28 14:33:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:32,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:33:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 14:33:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:33:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:33:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:33:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:32,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-28 14:33:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:32,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111116712] [2020-10-28 14:33:32,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:32,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:33:32,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286450277] [2020-10-28 14:33:32,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:33:32,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:33:32,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:33:32,571 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-10-28 14:33:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:32,749 INFO L93 Difference]: Finished difference Result 114 states and 193 transitions. [2020-10-28 14:33:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:33:32,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-28 14:33:32,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:32,760 INFO L225 Difference]: With dead ends: 114 [2020-10-28 14:33:32,760 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:33:32,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:33:32,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:33:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 14:33:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:33:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-28 14:33:32,807 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 12 [2020-10-28 14:33:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:32,808 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-28 14:33:32,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:33:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-28 14:33:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:33:32,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:32,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:32,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:33:32,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1773087040, now seen corresponding path program 1 times [2020-10-28 14:33:32,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:32,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128169833] [2020-10-28 14:33:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:33:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 14:33:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:33:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:33,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:33:33,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:33,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:33,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128169833] [2020-10-28 14:33:33,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:33,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:33:33,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31091531] [2020-10-28 14:33:33,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:33:33,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:33,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:33:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:33:33,066 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 5 states. [2020-10-28 14:33:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:33,264 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-10-28 14:33:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:33:33,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 14:33:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:33,266 INFO L225 Difference]: With dead ends: 83 [2020-10-28 14:33:33,266 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 14:33:33,268 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 [2020-10-28 14:33:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 14:33:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2020-10-28 14:33:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:33:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-28 14:33:33,283 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 13 [2020-10-28 14:33:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:33,286 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-28 14:33:33,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:33:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-28 14:33:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:33:33,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:33,288 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] [2020-10-28 14:33:33,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:33:33,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash -825144030, now seen corresponding path program 1 times [2020-10-28 14:33:33,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:33,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577048822] [2020-10-28 14:33:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:33,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:33,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:33:33,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-28 14:33:33,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:33,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 14:33:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:33,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:33,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:33:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:33,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:33,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577048822] [2020-10-28 14:33:33,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:33,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:33:33,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341532555] [2020-10-28 14:33:33,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:33:33,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:33:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:33:33,962 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 4 states. [2020-10-28 14:33:34,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:34,159 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-10-28 14:33:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:33:34,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:33:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:34,163 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:33:34,163 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:33:34,164 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 [2020-10-28 14:33:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:33:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-28 14:33:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 14:33:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-10-28 14:33:34,188 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 23 [2020-10-28 14:33:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:34,188 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-10-28 14:33:34,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:33:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-10-28 14:33:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:33:34,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:34,190 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] [2020-10-28 14:33:34,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:33:34,191 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash -911494601, now seen corresponding path program 1 times [2020-10-28 14:33:34,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:34,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182436221] [2020-10-28 14:33:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:33:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:33:34,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:34,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182436221] [2020-10-28 14:33:34,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:34,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:33:34,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103108801] [2020-10-28 14:33:34,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:33:34,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:34,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:33:34,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:33:34,761 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-10-28 14:33:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:35,314 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-10-28 14:33:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:33:35,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-28 14:33:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:35,328 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:33:35,328 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 14:33:35,329 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 [2020-10-28 14:33:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 14:33:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72. [2020-10-28 14:33:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:33:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2020-10-28 14:33:35,348 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 27 [2020-10-28 14:33:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:35,348 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2020-10-28 14:33:35,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:33:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2020-10-28 14:33:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:33:35,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:35,350 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] [2020-10-28 14:33:35,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:33:35,350 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:35,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1161269986, now seen corresponding path program 1 times [2020-10-28 14:33:35,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:35,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955119985] [2020-10-28 14:33:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:33:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-28 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:33:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:36,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:36,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955119985] [2020-10-28 14:33:36,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:36,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:33:36,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934408911] [2020-10-28 14:33:36,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:33:36,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:36,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:33:36,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:33:36,607 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand 9 states. [2020-10-28 14:33:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:37,174 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2020-10-28 14:33:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:33:37,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-28 14:33:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:37,177 INFO L225 Difference]: With dead ends: 133 [2020-10-28 14:33:37,177 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 14:33:37,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:33:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 14:33:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2020-10-28 14:33:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 14:33:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2020-10-28 14:33:37,191 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 30 [2020-10-28 14:33:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:37,191 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2020-10-28 14:33:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:33:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2020-10-28 14:33:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:33:37,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:37,193 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] [2020-10-28 14:33:37,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:33:37,193 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:37,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1694431754, now seen corresponding path program 1 times [2020-10-28 14:33:37,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:37,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129584084] [2020-10-28 14:33:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:33:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-28 14:33:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:37,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:33:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:33:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:37,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:37,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:33:37,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129584084] [2020-10-28 14:33:37,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:37,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:33:37,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187089707] [2020-10-28 14:33:37,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:33:37,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:37,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:33:37,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:33:37,777 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand 4 states. [2020-10-28 14:33:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:37,927 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2020-10-28 14:33:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:33:37,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 14:33:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:37,929 INFO L225 Difference]: With dead ends: 129 [2020-10-28 14:33:37,929 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 14:33:37,930 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 [2020-10-28 14:33:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 14:33:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 14:33:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 14:33:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-28 14:33:37,939 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 31 [2020-10-28 14:33:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:37,940 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-28 14:33:37,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:33:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-28 14:33:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:33:37,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:37,941 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] [2020-10-28 14:33:37,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:33:37,942 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:37,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1475577036, now seen corresponding path program 2 times [2020-10-28 14:33:37,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:37,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098719942] [2020-10-28 14:33:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:33:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 14:33:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:38,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:33:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:33:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:38,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098719942] [2020-10-28 14:33:38,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:38,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:38,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681961533] [2020-10-28 14:33:38,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:38,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:38,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:38,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:38,575 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 11 states. [2020-10-28 14:33:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:39,306 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2020-10-28 14:33:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:33:39,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-28 14:33:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:39,312 INFO L225 Difference]: With dead ends: 149 [2020-10-28 14:33:39,312 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 14:33:39,313 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 [2020-10-28 14:33:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 14:33:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 95. [2020-10-28 14:33:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 14:33:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2020-10-28 14:33:39,325 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 31 [2020-10-28 14:33:39,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:39,325 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2020-10-28 14:33:39,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2020-10-28 14:33:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:33:39,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:39,327 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-28 14:33:39,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:33:39,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:39,328 INFO L82 PathProgramCache]: Analyzing trace with hash -111006580, now seen corresponding path program 1 times [2020-10-28 14:33:39,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:39,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479938838] [2020-10-28 14:33:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:33:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-28 14:33:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:33:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:33:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:39,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:39,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479938838] [2020-10-28 14:33:39,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:39,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:33:39,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256730757] [2020-10-28 14:33:39,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:33:39,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:39,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:33:39,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:33:39,952 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand 10 states. [2020-10-28 14:33:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:40,504 INFO L93 Difference]: Finished difference Result 188 states and 244 transitions. [2020-10-28 14:33:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:33:40,504 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-28 14:33:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:40,506 INFO L225 Difference]: With dead ends: 188 [2020-10-28 14:33:40,506 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 14:33:40,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:33:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 14:33:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 109. [2020-10-28 14:33:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 14:33:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 140 transitions. [2020-10-28 14:33:40,519 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 140 transitions. Word has length 31 [2020-10-28 14:33:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:40,520 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 140 transitions. [2020-10-28 14:33:40,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:33:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 140 transitions. [2020-10-28 14:33:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:33:40,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:40,542 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-28 14:33:40,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:33:40,543 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:40,543 INFO L82 PathProgramCache]: Analyzing trace with hash -504033590, now seen corresponding path program 1 times [2020-10-28 14:33:40,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:40,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068253769] [2020-10-28 14:33:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:33:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:33:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-28 14:33:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 14:33:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:41,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:41,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:33:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:41,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:33:41,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068253769] [2020-10-28 14:33:41,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:41,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:33:41,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819414994] [2020-10-28 14:33:41,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:33:41,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:33:41,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:33:41,666 INFO L87 Difference]: Start difference. First operand 109 states and 140 transitions. Second operand 6 states. [2020-10-28 14:33:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:41,931 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2020-10-28 14:33:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:33:41,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-28 14:33:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:41,934 INFO L225 Difference]: With dead ends: 166 [2020-10-28 14:33:41,934 INFO L226 Difference]: Without dead ends: 123 [2020-10-28 14:33:41,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:33:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-28 14:33:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2020-10-28 14:33:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 14:33:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2020-10-28 14:33:41,955 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 31 [2020-10-28 14:33:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:41,960 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2020-10-28 14:33:41,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:33:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2020-10-28 14:33:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:33:41,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:41,970 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] [2020-10-28 14:33:41,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:33:41,970 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1036867019, now seen corresponding path program 1 times [2020-10-28 14:33:41,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:41,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222957430] [2020-10-28 14:33:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:42,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:44,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:33:44,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:33:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2088 [2020-10-28 14:33:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:44,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:33:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:33:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:44,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:44,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:33:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222957430] [2020-10-28 14:33:44,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:44,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 14:33:44,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287286897] [2020-10-28 14:33:44,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:44,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:44,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:44,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:44,303 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 11 states. [2020-10-28 14:33:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:44,867 INFO L93 Difference]: Finished difference Result 193 states and 251 transitions. [2020-10-28 14:33:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:33:44,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-28 14:33:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:44,869 INFO L225 Difference]: With dead ends: 193 [2020-10-28 14:33:44,870 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 14:33:44,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:33:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 14:33:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 123. [2020-10-28 14:33:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 14:33:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2020-10-28 14:33:44,888 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 33 [2020-10-28 14:33:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:44,890 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2020-10-28 14:33:44,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2020-10-28 14:33:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:33:44,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:44,893 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] [2020-10-28 14:33:44,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:33:44,894 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash 643840009, now seen corresponding path program 1 times [2020-10-28 14:33:44,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:44,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555314096] [2020-10-28 14:33:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-28 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:33:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:33:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:45,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555314096] [2020-10-28 14:33:45,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:45,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:45,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463264887] [2020-10-28 14:33:45,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:45,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:45,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:45,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:45,694 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand 11 states. [2020-10-28 14:33:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:46,406 INFO L93 Difference]: Finished difference Result 195 states and 252 transitions. [2020-10-28 14:33:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:33:46,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-28 14:33:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:46,408 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:33:46,408 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 14:33:46,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:33:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 14:33:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 137. [2020-10-28 14:33:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 14:33:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2020-10-28 14:33:46,434 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 33 [2020-10-28 14:33:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:46,434 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2020-10-28 14:33:46,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2020-10-28 14:33:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:33:46,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:46,435 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 14:33:46,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:33:46,436 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2146266711, now seen corresponding path program 2 times [2020-10-28 14:33:46,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:46,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40906443] [2020-10-28 14:33:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:33:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:33:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:47,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:47,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:33:47,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40906443] [2020-10-28 14:33:47,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:47,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:33:47,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070602301] [2020-10-28 14:33:47,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:33:47,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:47,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:33:47,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:33:47,071 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand 9 states. [2020-10-28 14:33:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:47,507 INFO L93 Difference]: Finished difference Result 185 states and 241 transitions. [2020-10-28 14:33:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:33:47,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-28 14:33:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:47,510 INFO L225 Difference]: With dead ends: 185 [2020-10-28 14:33:47,511 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 14:33:47,512 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 [2020-10-28 14:33:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 14:33:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-28 14:33:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 14:33:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2020-10-28 14:33:47,527 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 33 [2020-10-28 14:33:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:47,527 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2020-10-28 14:33:47,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:33:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2020-10-28 14:33:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:33:47,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:47,528 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] [2020-10-28 14:33:47,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:33:47,530 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -571007349, now seen corresponding path program 1 times [2020-10-28 14:33:47,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:47,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509440755] [2020-10-28 14:33:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:49,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:49,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:33:49,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:33:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-28 14:33:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:49,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:33:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:33:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:49,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509440755] [2020-10-28 14:33:49,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:49,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:33:49,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250894136] [2020-10-28 14:33:49,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:33:49,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:49,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:33:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:33:49,729 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand 8 states. [2020-10-28 14:33:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:50,144 INFO L93 Difference]: Finished difference Result 190 states and 241 transitions. [2020-10-28 14:33:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:33:50,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-28 14:33:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:50,147 INFO L225 Difference]: With dead ends: 190 [2020-10-28 14:33:50,147 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 14:33:50,148 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 [2020-10-28 14:33:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 14:33:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 134. [2020-10-28 14:33:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 14:33:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 169 transitions. [2020-10-28 14:33:50,170 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 169 transitions. Word has length 33 [2020-10-28 14:33:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:50,170 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 169 transitions. [2020-10-28 14:33:50,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:33:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 169 transitions. [2020-10-28 14:33:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:33:50,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:50,171 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] [2020-10-28 14:33:50,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:33:50,172 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1990993429, now seen corresponding path program 1 times [2020-10-28 14:33:50,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:50,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681314713] [2020-10-28 14:33:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:33:51,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-28 14:33:51,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:51,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:33:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:33:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:51,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681314713] [2020-10-28 14:33:51,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:51,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:51,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379632976] [2020-10-28 14:33:51,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:51,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:51,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:51,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:51,791 INFO L87 Difference]: Start difference. First operand 134 states and 169 transitions. Second operand 11 states. [2020-10-28 14:33:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:52,606 INFO L93 Difference]: Finished difference Result 181 states and 224 transitions. [2020-10-28 14:33:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:33:52,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-28 14:33:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:52,611 INFO L225 Difference]: With dead ends: 181 [2020-10-28 14:33:52,611 INFO L226 Difference]: Without dead ends: 177 [2020-10-28 14:33:52,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:33:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-28 14:33:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 138. [2020-10-28 14:33:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 14:33:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2020-10-28 14:33:52,638 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 34 [2020-10-28 14:33:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:52,638 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2020-10-28 14:33:52,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2020-10-28 14:33:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:33:52,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:52,639 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] [2020-10-28 14:33:52,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:33:52,640 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1656079315, now seen corresponding path program 3 times [2020-10-28 14:33:52,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:52,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092280640] [2020-10-28 14:33:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:33:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:33:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:53,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:53,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:53,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:53,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092280640] [2020-10-28 14:33:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:53,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:53,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190713934] [2020-10-28 14:33:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:53,694 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand 11 states. [2020-10-28 14:33:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:54,777 INFO L93 Difference]: Finished difference Result 208 states and 259 transitions. [2020-10-28 14:33:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:33:54,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-28 14:33:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:54,779 INFO L225 Difference]: With dead ends: 208 [2020-10-28 14:33:54,779 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 14:33:54,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:33:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 14:33:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 147. [2020-10-28 14:33:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 14:33:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 186 transitions. [2020-10-28 14:33:54,804 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 186 transitions. Word has length 34 [2020-10-28 14:33:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:54,805 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 186 transitions. [2020-10-28 14:33:54,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 186 transitions. [2020-10-28 14:33:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:33:54,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:54,807 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] [2020-10-28 14:33:54,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:33:54,809 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:54,809 INFO L82 PathProgramCache]: Analyzing trace with hash 285698622, now seen corresponding path program 1 times [2020-10-28 14:33:54,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:54,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061997226] [2020-10-28 14:33:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:33:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:33:55,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061997226] [2020-10-28 14:33:55,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:55,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:33:55,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189027923] [2020-10-28 14:33:55,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:33:55,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:33:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:33:55,668 INFO L87 Difference]: Start difference. First operand 147 states and 186 transitions. Second operand 6 states. [2020-10-28 14:33:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:55,865 INFO L93 Difference]: Finished difference Result 151 states and 189 transitions. [2020-10-28 14:33:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:33:55,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-28 14:33:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:55,867 INFO L225 Difference]: With dead ends: 151 [2020-10-28 14:33:55,867 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 14:33:55,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:33:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 14:33:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-28 14:33:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 14:33:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2020-10-28 14:33:55,885 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 35 [2020-10-28 14:33:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:55,886 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2020-10-28 14:33:55,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:33:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2020-10-28 14:33:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:33:55,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:55,887 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:55,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:33:55,887 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:55,888 INFO L82 PathProgramCache]: Analyzing trace with hash 37094625, now seen corresponding path program 3 times [2020-10-28 14:33:55,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:55,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819382366] [2020-10-28 14:33:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:56,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:33:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-28 14:33:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:56,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:33:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:33:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:56,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819382366] [2020-10-28 14:33:56,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:56,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:33:56,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85134118] [2020-10-28 14:33:56,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:33:56,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:33:56,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:33:56,613 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand 12 states. [2020-10-28 14:33:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:57,474 INFO L93 Difference]: Finished difference Result 230 states and 293 transitions. [2020-10-28 14:33:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:33:57,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-28 14:33:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:57,476 INFO L225 Difference]: With dead ends: 230 [2020-10-28 14:33:57,477 INFO L226 Difference]: Without dead ends: 226 [2020-10-28 14:33:57,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:33:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-28 14:33:57,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 160. [2020-10-28 14:33:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-28 14:33:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2020-10-28 14:33:57,492 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 35 [2020-10-28 14:33:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:57,493 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2020-10-28 14:33:57,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:33:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2020-10-28 14:33:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:33:57,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:57,494 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 14:33:57,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:33:57,494 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2022362273, now seen corresponding path program 2 times [2020-10-28 14:33:57,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:57,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870350699] [2020-10-28 14:33:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:57,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:33:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:58,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:58,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:58,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:33:58,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:58,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870350699] [2020-10-28 14:33:58,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:58,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:58,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898335253] [2020-10-28 14:33:58,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:58,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:58,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:58,141 INFO L87 Difference]: Start difference. First operand 160 states and 204 transitions. Second operand 11 states. [2020-10-28 14:33:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:58,842 INFO L93 Difference]: Finished difference Result 247 states and 313 transitions. [2020-10-28 14:33:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:33:58,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-28 14:33:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:58,844 INFO L225 Difference]: With dead ends: 247 [2020-10-28 14:33:58,844 INFO L226 Difference]: Without dead ends: 207 [2020-10-28 14:33:58,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:33:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-28 14:33:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 157. [2020-10-28 14:33:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 14:33:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2020-10-28 14:33:58,858 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 198 transitions. Word has length 35 [2020-10-28 14:33:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:58,859 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 198 transitions. [2020-10-28 14:33:58,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 198 transitions. [2020-10-28 14:33:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:33:58,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:58,860 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:58,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:33:58,860 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2011429216, now seen corresponding path program 1 times [2020-10-28 14:33:58,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:58,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676968421] [2020-10-28 14:33:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:59,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:33:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:33:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:00,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676968421] [2020-10-28 14:34:00,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:00,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:34:00,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458721351] [2020-10-28 14:34:00,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:34:00,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:00,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:34:00,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:34:00,041 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 6 states. [2020-10-28 14:34:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:00,228 INFO L93 Difference]: Finished difference Result 173 states and 215 transitions. [2020-10-28 14:34:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:34:00,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-28 14:34:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:00,230 INFO L225 Difference]: With dead ends: 173 [2020-10-28 14:34:00,230 INFO L226 Difference]: Without dead ends: 169 [2020-10-28 14:34:00,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-28 14:34:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2020-10-28 14:34:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 14:34:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 207 transitions. [2020-10-28 14:34:00,244 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 207 transitions. Word has length 36 [2020-10-28 14:34:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:00,244 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 207 transitions. [2020-10-28 14:34:00,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:34:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 207 transitions. [2020-10-28 14:34:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:34:00,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:00,245 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:00,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:34:00,246 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1890511070, now seen corresponding path program 1 times [2020-10-28 14:34:00,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:00,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708079458] [2020-10-28 14:34:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:01,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:34:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:01,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:01,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:01,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:01,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708079458] [2020-10-28 14:34:01,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:01,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:34:01,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904361815] [2020-10-28 14:34:01,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:34:01,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:01,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:34:01,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:34:01,087 INFO L87 Difference]: Start difference. First operand 165 states and 207 transitions. Second operand 6 states. [2020-10-28 14:34:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:01,298 INFO L93 Difference]: Finished difference Result 197 states and 244 transitions. [2020-10-28 14:34:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:34:01,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-28 14:34:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:01,300 INFO L225 Difference]: With dead ends: 197 [2020-10-28 14:34:01,300 INFO L226 Difference]: Without dead ends: 180 [2020-10-28 14:34:01,301 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 [2020-10-28 14:34:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-28 14:34:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-28 14:34:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 14:34:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 204 transitions. [2020-10-28 14:34:01,315 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 204 transitions. Word has length 36 [2020-10-28 14:34:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:01,315 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 204 transitions. [2020-10-28 14:34:01,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:34:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 204 transitions. [2020-10-28 14:34:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:34:01,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:01,316 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] [2020-10-28 14:34:01,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:34:01,318 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 249860854, now seen corresponding path program 1 times [2020-10-28 14:34:01,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:01,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500846857] [2020-10-28 14:34:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:34:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:01,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:01,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:01,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500846857] [2020-10-28 14:34:01,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:01,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:34:01,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284447674] [2020-10-28 14:34:01,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:34:01,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:01,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:34:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:01,952 INFO L87 Difference]: Start difference. First operand 163 states and 204 transitions. Second operand 8 states. [2020-10-28 14:34:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:02,292 INFO L93 Difference]: Finished difference Result 204 states and 251 transitions. [2020-10-28 14:34:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:34:02,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-28 14:34:02,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:02,293 INFO L225 Difference]: With dead ends: 204 [2020-10-28 14:34:02,294 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 14:34:02,294 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 [2020-10-28 14:34:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 14:34:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2020-10-28 14:34:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-28 14:34:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2020-10-28 14:34:02,310 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 36 [2020-10-28 14:34:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:02,310 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2020-10-28 14:34:02,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:34:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2020-10-28 14:34:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:34:02,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:02,311 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] [2020-10-28 14:34:02,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:34:02,312 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1241712350, now seen corresponding path program 2 times [2020-10-28 14:34:02,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:02,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188283560] [2020-10-28 14:34:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:34:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:34:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:03,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:03,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:03,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188283560] [2020-10-28 14:34:03,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:03,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:34:03,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071127948] [2020-10-28 14:34:03,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:34:03,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:03,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:34:03,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:03,293 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand 11 states. [2020-10-28 14:34:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:03,864 INFO L93 Difference]: Finished difference Result 208 states and 256 transitions. [2020-10-28 14:34:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:03,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-28 14:34:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:03,869 INFO L225 Difference]: With dead ends: 208 [2020-10-28 14:34:03,869 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 14:34:03,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:34:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 14:34:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2020-10-28 14:34:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 14:34:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2020-10-28 14:34:03,887 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 206 transitions. Word has length 37 [2020-10-28 14:34:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:03,887 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 206 transitions. [2020-10-28 14:34:03,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:34:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 206 transitions. [2020-10-28 14:34:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:34:03,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:03,888 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:34:03,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:34:03,890 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:03,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1550828244, now seen corresponding path program 4 times [2020-10-28 14:34:03,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:03,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127691959] [2020-10-28 14:34:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:05,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:05,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:34:05,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:34:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1904 [2020-10-28 14:34:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:05,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:34:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:06,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127691959] [2020-10-28 14:34:06,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:06,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:34:06,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721827063] [2020-10-28 14:34:06,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:34:06,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:06,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:34:06,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:06,185 INFO L87 Difference]: Start difference. First operand 165 states and 206 transitions. Second operand 11 states. [2020-10-28 14:34:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:07,314 INFO L93 Difference]: Finished difference Result 261 states and 319 transitions. [2020-10-28 14:34:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:34:07,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-28 14:34:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:07,317 INFO L225 Difference]: With dead ends: 261 [2020-10-28 14:34:07,318 INFO L226 Difference]: Without dead ends: 220 [2020-10-28 14:34:07,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:34:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-28 14:34:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2020-10-28 14:34:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-28 14:34:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2020-10-28 14:34:07,333 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 211 transitions. Word has length 37 [2020-10-28 14:34:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:07,333 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 211 transitions. [2020-10-28 14:34:07,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:34:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 211 transitions. [2020-10-28 14:34:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:34:07,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:07,335 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] [2020-10-28 14:34:07,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:34:07,335 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -636820042, now seen corresponding path program 2 times [2020-10-28 14:34:07,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:07,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929350540] [2020-10-28 14:34:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:34:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-10-28 14:34:08,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:08,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:34:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:34:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:09,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:09,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929350540] [2020-10-28 14:34:09,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:09,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:09,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213461288] [2020-10-28 14:34:09,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:09,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:09,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:09,512 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. Second operand 12 states. [2020-10-28 14:34:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:10,433 INFO L93 Difference]: Finished difference Result 208 states and 257 transitions. [2020-10-28 14:34:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:34:10,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-28 14:34:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:10,435 INFO L225 Difference]: With dead ends: 208 [2020-10-28 14:34:10,435 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 14:34:10,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:34:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 14:34:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 158. [2020-10-28 14:34:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 14:34:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2020-10-28 14:34:10,458 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 38 [2020-10-28 14:34:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:10,458 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2020-10-28 14:34:10,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2020-10-28 14:34:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:34:10,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:10,459 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:10,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:34:10,459 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:10,460 INFO L82 PathProgramCache]: Analyzing trace with hash -301905928, now seen corresponding path program 5 times [2020-10-28 14:34:10,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:10,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369307712] [2020-10-28 14:34:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:34:11,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:34:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:11,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:11,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369307712] [2020-10-28 14:34:11,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:11,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:11,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106166003] [2020-10-28 14:34:11,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:11,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:11,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:11,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:11,625 INFO L87 Difference]: Start difference. First operand 158 states and 200 transitions. Second operand 13 states. [2020-10-28 14:34:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:12,684 INFO L93 Difference]: Finished difference Result 268 states and 333 transitions. [2020-10-28 14:34:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:34:12,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-28 14:34:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:12,686 INFO L225 Difference]: With dead ends: 268 [2020-10-28 14:34:12,687 INFO L226 Difference]: Without dead ends: 264 [2020-10-28 14:34:12,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:34:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-28 14:34:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 192. [2020-10-28 14:34:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-28 14:34:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 247 transitions. [2020-10-28 14:34:12,706 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 247 transitions. Word has length 38 [2020-10-28 14:34:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:12,706 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 247 transitions. [2020-10-28 14:34:12,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 247 transitions. [2020-10-28 14:34:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:34:12,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:12,707 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] [2020-10-28 14:34:12,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:34:12,708 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:12,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1309517944, now seen corresponding path program 1 times [2020-10-28 14:34:12,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:12,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674446409] [2020-10-28 14:34:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:34:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:13,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674446409] [2020-10-28 14:34:13,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:13,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:13,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937352215] [2020-10-28 14:34:13,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:13,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:13,404 INFO L87 Difference]: Start difference. First operand 192 states and 247 transitions. Second operand 12 states. [2020-10-28 14:34:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:14,132 INFO L93 Difference]: Finished difference Result 301 states and 376 transitions. [2020-10-28 14:34:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:34:14,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-28 14:34:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:14,134 INFO L225 Difference]: With dead ends: 301 [2020-10-28 14:34:14,134 INFO L226 Difference]: Without dead ends: 260 [2020-10-28 14:34:14,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:34:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-28 14:34:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 208. [2020-10-28 14:34:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-28 14:34:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 267 transitions. [2020-10-28 14:34:14,154 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 267 transitions. Word has length 38 [2020-10-28 14:34:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:14,154 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 267 transitions. [2020-10-28 14:34:14,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 267 transitions. [2020-10-28 14:34:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:34:14,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:14,155 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] [2020-10-28 14:34:14,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 14:34:14,155 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:14,156 INFO L82 PathProgramCache]: Analyzing trace with hash -838489448, now seen corresponding path program 1 times [2020-10-28 14:34:14,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:14,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069800616] [2020-10-28 14:34:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:34:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:14,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:14,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:14,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069800616] [2020-10-28 14:34:14,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:14,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:14,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784173286] [2020-10-28 14:34:14,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:14,810 INFO L87 Difference]: Start difference. First operand 208 states and 267 transitions. Second operand 12 states. [2020-10-28 14:34:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:15,501 INFO L93 Difference]: Finished difference Result 299 states and 377 transitions. [2020-10-28 14:34:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:15,502 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-28 14:34:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:15,504 INFO L225 Difference]: With dead ends: 299 [2020-10-28 14:34:15,504 INFO L226 Difference]: Without dead ends: 295 [2020-10-28 14:34:15,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-28 14:34:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 231. [2020-10-28 14:34:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-28 14:34:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 296 transitions. [2020-10-28 14:34:15,533 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 296 transitions. Word has length 39 [2020-10-28 14:34:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:15,534 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 296 transitions. [2020-10-28 14:34:15,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 296 transitions. [2020-10-28 14:34:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:34:15,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:15,535 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] [2020-10-28 14:34:15,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 14:34:15,536 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1231516458, now seen corresponding path program 1 times [2020-10-28 14:34:15,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:15,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099452183] [2020-10-28 14:34:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:34:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:34:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:34:17,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099452183] [2020-10-28 14:34:17,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:17,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:17,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040084826] [2020-10-28 14:34:17,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:17,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:17,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:17,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:17,159 INFO L87 Difference]: Start difference. First operand 231 states and 296 transitions. Second operand 12 states. [2020-10-28 14:34:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:18,334 INFO L93 Difference]: Finished difference Result 324 states and 405 transitions. [2020-10-28 14:34:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:34:18,336 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-28 14:34:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:18,338 INFO L225 Difference]: With dead ends: 324 [2020-10-28 14:34:18,338 INFO L226 Difference]: Without dead ends: 281 [2020-10-28 14:34:18,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:34:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-28 14:34:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 236. [2020-10-28 14:34:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-28 14:34:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 300 transitions. [2020-10-28 14:34:18,360 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 300 transitions. Word has length 39 [2020-10-28 14:34:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:18,361 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 300 transitions. [2020-10-28 14:34:18,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:18,361 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 300 transitions. [2020-10-28 14:34:18,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:34:18,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:18,362 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] [2020-10-28 14:34:18,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 14:34:18,362 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:18,363 INFO L82 PathProgramCache]: Analyzing trace with hash -698566340, now seen corresponding path program 1 times [2020-10-28 14:34:18,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:18,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766372200] [2020-10-28 14:34:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:19,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:34:19,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 14:34:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:19,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:19,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766372200] [2020-10-28 14:34:19,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:19,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:19,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158869362] [2020-10-28 14:34:19,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:19,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:19,859 INFO L87 Difference]: Start difference. First operand 236 states and 300 transitions. Second operand 12 states. [2020-10-28 14:34:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:20,759 INFO L93 Difference]: Finished difference Result 307 states and 384 transitions. [2020-10-28 14:34:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:20,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-28 14:34:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:20,761 INFO L225 Difference]: With dead ends: 307 [2020-10-28 14:34:20,761 INFO L226 Difference]: Without dead ends: 303 [2020-10-28 14:34:20,761 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 [2020-10-28 14:34:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-28 14:34:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 236. [2020-10-28 14:34:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-28 14:34:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 300 transitions. [2020-10-28 14:34:20,784 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 300 transitions. Word has length 40 [2020-10-28 14:34:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:20,784 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 300 transitions. [2020-10-28 14:34:20,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 300 transitions. [2020-10-28 14:34:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:34:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:20,785 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] [2020-10-28 14:34:20,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 14:34:20,786 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2498238, now seen corresponding path program 1 times [2020-10-28 14:34:20,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:20,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75583862] [2020-10-28 14:34:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:23,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2714 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 14:34:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:23,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:23,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:23,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:34:23,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75583862] [2020-10-28 14:34:23,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:23,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:23,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535830577] [2020-10-28 14:34:23,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:23,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:23,812 INFO L87 Difference]: Start difference. First operand 236 states and 300 transitions. Second operand 12 states. [2020-10-28 14:34:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:25,136 INFO L93 Difference]: Finished difference Result 280 states and 350 transitions. [2020-10-28 14:34:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:34:25,136 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-28 14:34:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:25,138 INFO L225 Difference]: With dead ends: 280 [2020-10-28 14:34:25,138 INFO L226 Difference]: Without dead ends: 276 [2020-10-28 14:34:25,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:34:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-28 14:34:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 232. [2020-10-28 14:34:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-28 14:34:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 295 transitions. [2020-10-28 14:34:25,168 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 295 transitions. Word has length 40 [2020-10-28 14:34:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:25,169 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 295 transitions. [2020-10-28 14:34:25,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 295 transitions. [2020-10-28 14:34:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:34:25,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:25,170 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] [2020-10-28 14:34:25,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 14:34:25,170 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:25,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1450242431, now seen corresponding path program 1 times [2020-10-28 14:34:25,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:25,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35839339] [2020-10-28 14:34:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:25,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:34:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-28 14:34:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:25,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:34:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 14:34:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:26,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:26,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:26,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:26,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:26,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35839339] [2020-10-28 14:34:26,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:26,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:26,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030478224] [2020-10-28 14:34:26,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:26,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:26,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:26,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:26,108 INFO L87 Difference]: Start difference. First operand 232 states and 295 transitions. Second operand 13 states. [2020-10-28 14:34:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:27,019 INFO L93 Difference]: Finished difference Result 313 states and 391 transitions. [2020-10-28 14:34:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:34:27,019 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-28 14:34:27,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:27,022 INFO L225 Difference]: With dead ends: 313 [2020-10-28 14:34:27,022 INFO L226 Difference]: Without dead ends: 309 [2020-10-28 14:34:27,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:34:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-28 14:34:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 236. [2020-10-28 14:34:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-28 14:34:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 300 transitions. [2020-10-28 14:34:27,050 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 300 transitions. Word has length 40 [2020-10-28 14:34:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:27,050 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 300 transitions. [2020-10-28 14:34:27,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 300 transitions. [2020-10-28 14:34:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:34:27,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:27,051 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:27,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 14:34:27,052 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:27,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1342298163, now seen corresponding path program 6 times [2020-10-28 14:34:27,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:27,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918974602] [2020-10-28 14:34:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:27,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:34:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:34:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:27,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:27,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:27,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:27,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:27,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:34:27,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918974602] [2020-10-28 14:34:27,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:27,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:34:27,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53876852] [2020-10-28 14:34:27,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:34:27,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:27,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:34:27,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:27,962 INFO L87 Difference]: Start difference. First operand 236 states and 300 transitions. Second operand 11 states. [2020-10-28 14:34:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:28,848 INFO L93 Difference]: Finished difference Result 299 states and 374 transitions. [2020-10-28 14:34:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:34:28,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-28 14:34:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:28,852 INFO L225 Difference]: With dead ends: 299 [2020-10-28 14:34:28,852 INFO L226 Difference]: Without dead ends: 251 [2020-10-28 14:34:28,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:34:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-28 14:34:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2020-10-28 14:34:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-28 14:34:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 297 transitions. [2020-10-28 14:34:28,880 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 297 transitions. Word has length 40 [2020-10-28 14:34:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:28,880 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 297 transitions. [2020-10-28 14:34:28,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:34:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 297 transitions. [2020-10-28 14:34:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 14:34:28,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:28,882 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] [2020-10-28 14:34:28,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 14:34:28,882 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash -665529656, now seen corresponding path program 1 times [2020-10-28 14:34:28,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:28,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937558514] [2020-10-28 14:34:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 14:34:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:34:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:30,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937558514] [2020-10-28 14:34:30,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:30,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:34:30,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700870216] [2020-10-28 14:34:30,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:34:30,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:30,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:34:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:34:30,169 INFO L87 Difference]: Start difference. First operand 235 states and 297 transitions. Second operand 6 states. [2020-10-28 14:34:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:30,369 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2020-10-28 14:34:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:34:30,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-28 14:34:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:30,371 INFO L225 Difference]: With dead ends: 245 [2020-10-28 14:34:30,372 INFO L226 Difference]: Without dead ends: 228 [2020-10-28 14:34:30,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-28 14:34:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-28 14:34:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-28 14:34:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 287 transitions. [2020-10-28 14:34:30,394 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 287 transitions. Word has length 41 [2020-10-28 14:34:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:30,395 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 287 transitions. [2020-10-28 14:34:30,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:34:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 287 transitions. [2020-10-28 14:34:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 14:34:30,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:30,396 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] [2020-10-28 14:34:30,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 14:34:30,396 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1532645173, now seen corresponding path program 1 times [2020-10-28 14:34:30,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:30,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164200181] [2020-10-28 14:34:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:34:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:32,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:32,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:32,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164200181] [2020-10-28 14:34:32,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:32,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:32,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610671812] [2020-10-28 14:34:32,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:32,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:32,244 INFO L87 Difference]: Start difference. First operand 228 states and 287 transitions. Second operand 13 states. [2020-10-28 14:34:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:33,109 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2020-10-28 14:34:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:34:33,111 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-28 14:34:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:33,112 INFO L225 Difference]: With dead ends: 287 [2020-10-28 14:34:33,112 INFO L226 Difference]: Without dead ends: 280 [2020-10-28 14:34:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:34:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-28 14:34:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 219. [2020-10-28 14:34:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-28 14:34:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 276 transitions. [2020-10-28 14:34:33,135 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 276 transitions. Word has length 41 [2020-10-28 14:34:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:33,135 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 276 transitions. [2020-10-28 14:34:33,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 276 transitions. [2020-10-28 14:34:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 14:34:33,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:33,136 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:33,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 14:34:33,136 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1999267455, now seen corresponding path program 7 times [2020-10-28 14:34:33,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:33,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900506303] [2020-10-28 14:34:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:33,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:34:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:34:33,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:34,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900506303] [2020-10-28 14:34:34,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:34,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:34,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106392675] [2020-10-28 14:34:34,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:34,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:34,121 INFO L87 Difference]: Start difference. First operand 219 states and 276 transitions. Second operand 13 states. [2020-10-28 14:34:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:35,295 INFO L93 Difference]: Finished difference Result 291 states and 362 transitions. [2020-10-28 14:34:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:34:35,296 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-28 14:34:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:35,298 INFO L225 Difference]: With dead ends: 291 [2020-10-28 14:34:35,298 INFO L226 Difference]: Without dead ends: 287 [2020-10-28 14:34:35,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:34:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-28 14:34:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 228. [2020-10-28 14:34:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-28 14:34:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 289 transitions. [2020-10-28 14:34:35,322 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 289 transitions. Word has length 41 [2020-10-28 14:34:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:35,322 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 289 transitions. [2020-10-28 14:34:35,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 289 transitions. [2020-10-28 14:34:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 14:34:35,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:35,324 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] [2020-10-28 14:34:35,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 14:34:35,324 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1819325621, now seen corresponding path program 1 times [2020-10-28 14:34:35,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:35,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852777259] [2020-10-28 14:34:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:35,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 14:34:35,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 14:34:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:35,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:35,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852777259] [2020-10-28 14:34:35,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:35,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:34:35,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963220824] [2020-10-28 14:34:35,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:34:35,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:35,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:34:35,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:34:35,708 INFO L87 Difference]: Start difference. First operand 228 states and 289 transitions. Second operand 10 states. [2020-10-28 14:34:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:36,295 INFO L93 Difference]: Finished difference Result 288 states and 357 transitions. [2020-10-28 14:34:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:34:36,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 14:34:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:36,298 INFO L225 Difference]: With dead ends: 288 [2020-10-28 14:34:36,298 INFO L226 Difference]: Without dead ends: 264 [2020-10-28 14:34:36,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:36,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-28 14:34:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 241. [2020-10-28 14:34:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-28 14:34:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 303 transitions. [2020-10-28 14:34:36,324 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 303 transitions. Word has length 42 [2020-10-28 14:34:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:36,324 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 303 transitions. [2020-10-28 14:34:36,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:34:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 303 transitions. [2020-10-28 14:34:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 14:34:36,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:36,325 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:36,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 14:34:36,326 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:36,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1318619581, now seen corresponding path program 8 times [2020-10-28 14:34:36,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:36,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277708039] [2020-10-28 14:34:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 14:34:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:37,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277708039] [2020-10-28 14:34:37,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:37,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:34:37,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474784496] [2020-10-28 14:34:37,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:34:37,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:37,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:34:37,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:34:37,431 INFO L87 Difference]: Start difference. First operand 241 states and 303 transitions. Second operand 14 states. [2020-10-28 14:34:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:38,446 INFO L93 Difference]: Finished difference Result 323 states and 406 transitions. [2020-10-28 14:34:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:34:38,447 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-28 14:34:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:38,450 INFO L225 Difference]: With dead ends: 323 [2020-10-28 14:34:38,450 INFO L226 Difference]: Without dead ends: 319 [2020-10-28 14:34:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:34:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-28 14:34:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 258. [2020-10-28 14:34:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-28 14:34:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 327 transitions. [2020-10-28 14:34:38,479 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 327 transitions. Word has length 42 [2020-10-28 14:34:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:38,480 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 327 transitions. [2020-10-28 14:34:38,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:34:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 327 transitions. [2020-10-28 14:34:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 14:34:38,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:38,481 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] [2020-10-28 14:34:38,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 14:34:38,481 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2068813507, now seen corresponding path program 2 times [2020-10-28 14:34:38,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:38,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964927202] [2020-10-28 14:34:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:34:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:39,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964927202] [2020-10-28 14:34:39,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:39,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:39,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383911927] [2020-10-28 14:34:39,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:39,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:39,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:39,572 INFO L87 Difference]: Start difference. First operand 258 states and 327 transitions. Second operand 13 states. [2020-10-28 14:34:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:40,415 INFO L93 Difference]: Finished difference Result 349 states and 435 transitions. [2020-10-28 14:34:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:34:40,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-28 14:34:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:40,417 INFO L225 Difference]: With dead ends: 349 [2020-10-28 14:34:40,417 INFO L226 Difference]: Without dead ends: 300 [2020-10-28 14:34:40,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-28 14:34:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 255. [2020-10-28 14:34:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-28 14:34:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 321 transitions. [2020-10-28 14:34:40,444 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 321 transitions. Word has length 42 [2020-10-28 14:34:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:40,445 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 321 transitions. [2020-10-28 14:34:40,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 321 transitions. [2020-10-28 14:34:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:34:40,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:40,446 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] [2020-10-28 14:34:40,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 14:34:40,446 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:40,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash 89322175, now seen corresponding path program 1 times [2020-10-28 14:34:40,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:40,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944839836] [2020-10-28 14:34:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:34:40,465 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:34:40,465 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:34:40,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 14:34:40,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:34:40 BoogieIcfgContainer [2020-10-28 14:34:40,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:34:40,495 INFO L168 Benchmark]: Toolchain (without parser) took 70370.68 ms. Allocated memory was 153.1 MB in the beginning and 563.1 MB in the end (delta: 410.0 MB). Free memory was 127.1 MB in the beginning and 367.8 MB in the end (delta: -240.6 MB). Peak memory consumption was 170.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:34:40,495 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:34:40,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.24 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 104.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:34:40,496 INFO L168 Benchmark]: Boogie Preprocessor took 157.82 ms. Allocated memory is still 153.1 MB. Free memory was 104.0 MB in the beginning and 134.1 MB in the end (delta: -30.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:34:40,496 INFO L168 Benchmark]: RCFGBuilder took 907.53 ms. Allocated memory is still 153.1 MB. Free memory was 134.1 MB in the beginning and 85.3 MB in the end (delta: 48.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:34:40,497 INFO L168 Benchmark]: TraceAbstraction took 68702.04 ms. Allocated memory was 153.1 MB in the beginning and 563.1 MB in the end (delta: 410.0 MB). Free memory was 84.8 MB in the beginning and 367.8 MB in the end (delta: -283.0 MB). Peak memory consumption was 128.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:34:40,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 591.24 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 104.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 157.82 ms. Allocated memory is still 153.1 MB. Free memory was 104.0 MB in the beginning and 134.1 MB in the end (delta: -30.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 907.53 ms. Allocated memory is still 153.1 MB. Free memory was 134.1 MB in the beginning and 85.3 MB in the end (delta: 48.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 68702.04 ms. Allocated memory was 153.1 MB in the beginning and 563.1 MB in the end (delta: 410.0 MB). Free memory was 84.8 MB in the beginning and 367.8 MB in the end (delta: -283.0 MB). Peak memory consumption was 128.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int marked = 0; [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND TRUE __VERIFIER_nondet_int() [L1013] marked = 1 [L1016] COND TRUE \read(marked) [L1017] x->data = 1 [L1004] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1025] marked = 0 [L1027] EXPR x->next [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] EXPR x->next [L1027] EXPR x->next->data [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1032] EXPR x->next [L1032] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1032] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1032] COND FALSE !(x->next != ((void*)0) && __VERIFIER_nondet_int()) [L1038] SLL* tmp = malloc(sizeof(SLL)); [L1039] tmp->data = 1 [L1040] tmp->next = ((void*)0) [L1041] EXPR x->next [L1041] COND FALSE !(x->next == ((void*)0)) [L1045] EXPR x->next [L1045] tmp->next = x->next [L1046] x->next = tmp [L1049] marked = 0 [L1050] x = head [L1052] x != ((void*)0) && x->data != 1 [L1052] EXPR x->data [L1052] x != ((void*)0) && x->data != 1 [L1052] COND TRUE x != ((void*)0) && x->data != 1 [L1054] EXPR x->data [L1054] marked = x->data [L1055] EXPR x->data [L1055] COND FALSE !(!(x->data == 0)) [L1056] COND FALSE !(!(marked == 0)) [L1057] EXPR x->next [L1057] x = x->next [L1052] x != ((void*)0) && x->data != 1 [L1052] EXPR x->data [L1052] x != ((void*)0) && x->data != 1 [L1052] COND FALSE !(x != ((void*)0) && x->data != 1) [L1059] COND TRUE x != ((void*)0) [L1061] EXPR x->data [L1061] marked = x->data [L1062] EXPR x->data [L1062] COND TRUE !(x->data != 1) [L1062] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 68.6s, OverallIterations: 39, TraceHistogramMax: 5, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2204 SDtfs, 3508 SDslu, 10434 SDs, 0 SdLazy, 12927 SolverSat, 1044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 597 GetRequests, 124 SyntacticMatches, 9 SemanticMatches, 464 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 38 MinimizatonAttempts, 1372 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 41.1s InterpolantComputationTime, 1360 NumberOfCodeBlocks, 1360 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1279 ConstructedInterpolants, 0 QuantifiedInterpolants, 797118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 10 PerfectInterpolantSequences, 58/368 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...