/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:45,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:45,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:45,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:45,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:45,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:45,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:45,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:45,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:45,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:45,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:45,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:45,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:45,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:45,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:45,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:45,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:45,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:45,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:45,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:45,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:45,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:45,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:45,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:45,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:45,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:45,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:45,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:45,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:45,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:45,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:45,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:45,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:45,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:45,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:45,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:45,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:45,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:45,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:45,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:45,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:45,447 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 [2020-09-25 14:35:45,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:45,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:45,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:45,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:45,506 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:45,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:45,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:45,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:45,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:45,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:45,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:45,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:45,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:45,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:45,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:45,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:45,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:45,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:45,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:45,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:45,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:45,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:45,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:45,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:45,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:35:45,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:45,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:45,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:45,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:45,975 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:45,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 14:35:46,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b40123e7/bd6c65b3763f4373bf1e9f05f3b4ea94/FLAGe29eb380f [2020-09-25 14:35:46,648 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:46,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 14:35:46,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b40123e7/bd6c65b3763f4373bf1e9f05f3b4ea94/FLAGe29eb380f [2020-09-25 14:35:46,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b40123e7/bd6c65b3763f4373bf1e9f05f3b4ea94 [2020-09-25 14:35:46,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:46,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:46,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:46,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:46,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:46,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac0f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46, skipping insertion in model container [2020-09-25 14:35:46,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:47,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:47,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:47,537 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:47,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:47,648 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:47,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47 WrapperNode [2020-09-25 14:35:47,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:47,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:47,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:47,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:47,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (1/1) ... [2020-09-25 14:35:47,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:47,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:47,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:47,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:47,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (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 [2020-09-25 14:35:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:48,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:48,370 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 14:35:48,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:48 BoogieIcfgContainer [2020-09-25 14:35:48,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:48,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:48,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:48,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:48,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:46" (1/3) ... [2020-09-25 14:35:48,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65252755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:48, skipping insertion in model container [2020-09-25 14:35:48,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:47" (2/3) ... [2020-09-25 14:35:48,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65252755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:48, skipping insertion in model container [2020-09-25 14:35:48,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:48" (3/3) ... [2020-09-25 14:35:48,394 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 14:35:48,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:48,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 14:35:48,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 14:35:48,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:48,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:48,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:48,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:48,485 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:48,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:48,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:48,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 14:35:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 14:35:48,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:48,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:48,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 14:35:48,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:48,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310400327] [2020-09-25 14:35:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:35:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 14:35:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:49,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:35:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:35:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:49,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:49,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:35:49,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:49,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:49,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310400327] [2020-09-25 14:35:49,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:49,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:35:49,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084562913] [2020-09-25 14:35:49,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:35:49,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:49,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:35:49,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:49,536 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-25 14:35:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:49,988 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-25 14:35:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:49,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 14:35:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:50,004 INFO L225 Difference]: With dead ends: 205 [2020-09-25 14:35:50,004 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 14:35:50,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 14:35:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 14:35:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 14:35:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 14:35:50,065 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-25 14:35:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:50,066 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 14:35:50,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:35:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 14:35:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 14:35:50,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:50,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:50,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:50,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:50,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 14:35:50,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:50,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942529438] [2020-09-25 14:35:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:35:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 14:35:50,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:50,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:35:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:35:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:50,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:50,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:35:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:50,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:50,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942529438] [2020-09-25 14:35:50,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:50,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:50,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768626233] [2020-09-25 14:35:50,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:50,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:50,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:50,470 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 14:35:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:50,761 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 14:35:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:35:50,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 14:35:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:50,763 INFO L225 Difference]: With dead ends: 120 [2020-09-25 14:35:50,764 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 14:35:50,765 INFO L675 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 [2020-09-25 14:35:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 14:35:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 14:35:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 14:35:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 14:35:50,778 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 14:35:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:50,778 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 14:35:50,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 14:35:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 14:35:50,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:50,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:50,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:50,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 14:35:50,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:50,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751700468] [2020-09-25 14:35:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:51,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:35:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 14:35:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:51,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:35:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:35:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:35:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:51,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:51,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:35:51,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:51,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:51,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751700468] [2020-09-25 14:35:51,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:51,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:51,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647336355] [2020-09-25 14:35:51,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:51,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:51,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:51,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:51,480 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 14:35:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:51,713 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 14:35:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:35:51,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 14:35:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:51,715 INFO L225 Difference]: With dead ends: 136 [2020-09-25 14:35:51,715 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 14:35:51,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 14:35:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 14:35:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 14:35:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 14:35:51,726 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 14:35:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:51,727 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 14:35:51,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 14:35:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 14:35:51,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:51,729 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:51,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:35:51,729 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 14:35:51,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:51,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169990977] [2020-09-25 14:35:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:35:52,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-25 14:35:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:52,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:35:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:35:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:35:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:53,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:53,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:53,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:35:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:53,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:35:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:53,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169990977] [2020-09-25 14:35:53,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:35:53,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:35:53,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517536682] [2020-09-25 14:35:53,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:35:53,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:53,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:35:53,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:35:53,082 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 14:35:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:54,241 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 14:35:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:35:54,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 14:35:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:54,245 INFO L225 Difference]: With dead ends: 166 [2020-09-25 14:35:54,245 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 14:35:54,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 14:35:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 14:35:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 14:35:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 14:35:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 14:35:54,272 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 14:35:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:54,272 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 14:35:54,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:35:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 14:35:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 14:35:54,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:54,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:54,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:35:54,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:54,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 14:35:54,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:54,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936975963] [2020-09-25 14:35:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:58,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 14:35:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:35:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-09-25 14:35:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:58,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:35:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:59,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:59,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:59,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:35:59,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:59,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:59,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:59,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936975963] [2020-09-25 14:35:59,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:35:59,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:35:59,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650535540] [2020-09-25 14:35:59,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:35:59,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:35:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:59,171 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 14 states. [2020-09-25 14:36:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:00,041 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-09-25 14:36:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:36:00,042 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-25 14:36:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:00,044 INFO L225 Difference]: With dead ends: 155 [2020-09-25 14:36:00,044 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 14:36:00,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:36:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 14:36:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-09-25 14:36:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 14:36:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-09-25 14:36:00,056 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 43 [2020-09-25 14:36:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:00,056 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-09-25 14:36:00,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:36:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-09-25 14:36:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:36:00,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:00,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:00,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:36:00,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:00,060 INFO L82 PathProgramCache]: Analyzing trace with hash -261235589, now seen corresponding path program 1 times [2020-09-25 14:36:00,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:00,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096141831] [2020-09-25 14:36:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:01,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:01,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:36:01,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-09-25 14:36:01,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:01,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:36:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:36:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:01,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:01,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:01,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096141831] [2020-09-25 14:36:01,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:01,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:36:01,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79016169] [2020-09-25 14:36:01,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:36:01,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:01,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:36:01,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:36:01,981 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 7 states. [2020-09-25 14:36:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:02,276 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-09-25 14:36:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:36:02,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 14:36:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:02,277 INFO L225 Difference]: With dead ends: 140 [2020-09-25 14:36:02,280 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 14:36:02,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 14:36:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-25 14:36:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 14:36:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-25 14:36:02,305 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 47 [2020-09-25 14:36:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:02,305 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-25 14:36:02,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:36:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-25 14:36:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:36:02,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:02,308 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:02,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:36:02,308 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 14:36:02,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:02,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429964033] [2020-09-25 14:36:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:03,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:03,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:36:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-09-25 14:36:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:03,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:36:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:36:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:36:03,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:04,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:04,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:04,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:04,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:04,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:04,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429964033] [2020-09-25 14:36:04,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:04,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:36:04,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780412629] [2020-09-25 14:36:04,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:36:04,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:04,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:36:04,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:04,526 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-25 14:36:06,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:06,301 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-25 14:36:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 14:36:06,301 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 14:36:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:06,302 INFO L225 Difference]: With dead ends: 169 [2020-09-25 14:36:06,303 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 14:36:06,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 14:36:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 14:36:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-25 14:36:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 14:36:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 14:36:06,312 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-25 14:36:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:06,312 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 14:36:06,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:36:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 14:36:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 14:36:06,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:06,314 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:06,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:36:06,315 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 14:36:06,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:06,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709465001] [2020-09-25 14:36:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:36:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:36:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:11,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:36:11,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709465001] [2020-09-25 14:36:11,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:11,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:36:11,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453252079] [2020-09-25 14:36:11,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:36:11,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:11,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:36:11,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:36:11,442 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-25 14:36:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:11,626 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-25 14:36:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:36:11,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 14:36:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:11,629 INFO L225 Difference]: With dead ends: 131 [2020-09-25 14:36:11,629 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 14:36:11,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:36:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 14:36:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 14:36:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 14:36:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 14:36:11,641 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-25 14:36:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:11,641 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 14:36:11,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:36:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 14:36:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:36:11,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:11,650 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:11,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:36:11,651 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:11,651 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 14:36:11,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:11,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303238366] [2020-09-25 14:36:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:36:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:36:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:36:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:13,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303238366] [2020-09-25 14:36:13,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:13,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:36:13,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433172712] [2020-09-25 14:36:13,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:36:13,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:13,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:36:13,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:13,771 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 14:36:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:15,316 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 14:36:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:36:15,317 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 14:36:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:15,319 INFO L225 Difference]: With dead ends: 186 [2020-09-25 14:36:15,320 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 14:36:15,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 14:36:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 14:36:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 14:36:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 14:36:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 14:36:15,328 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 14:36:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:15,328 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 14:36:15,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:36:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 14:36:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:36:15,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:15,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:15,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:36:15,330 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 14:36:15,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:15,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782721225] [2020-09-25 14:36:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:19,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:36:19,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:36:19,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:20,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782721225] [2020-09-25 14:36:20,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:20,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:36:20,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777570054] [2020-09-25 14:36:20,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:36:20,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:36:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:36:20,114 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-25 14:36:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:21,155 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 14:36:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:36:21,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 14:36:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:21,157 INFO L225 Difference]: With dead ends: 188 [2020-09-25 14:36:21,158 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 14:36:21,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:36:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 14:36:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 14:36:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 14:36:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 14:36:21,166 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 14:36:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:21,167 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 14:36:21,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:36:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 14:36:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 14:36:21,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:21,168 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:21,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:36:21,168 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 14:36:21,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:21,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032302048] [2020-09-25 14:36:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:36:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-09-25 14:36:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:36:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:36:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:36:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,864 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 14:36:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:24,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:24,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:36:24,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:24,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:24,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032302048] [2020-09-25 14:36:24,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:24,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 14:36:24,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000932844] [2020-09-25 14:36:24,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 14:36:24,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:24,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 14:36:24,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:36:24,322 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 14:36:24,940 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 14:36:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:27,391 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 14:36:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 14:36:27,392 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 14:36:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:27,394 INFO L225 Difference]: With dead ends: 163 [2020-09-25 14:36:27,394 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 14:36:27,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 14:36:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 14:36:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 14:36:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 14:36:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 14:36:27,403 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 14:36:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:27,403 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 14:36:27,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 14:36:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 14:36:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:36:27,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:27,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:27,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:36:27,405 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 14:36:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:27,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120268895] [2020-09-25 14:36:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:32,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 14:36:32,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:36:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:36:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:32,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:36:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:36:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:36:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:32,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:32,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120268895] [2020-09-25 14:36:32,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:32,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:36:32,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119818705] [2020-09-25 14:36:32,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:36:32,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:32,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:36:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:36:32,747 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 17 states. [2020-09-25 14:36:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:33,941 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2020-09-25 14:36:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:36:33,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-09-25 14:36:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:33,944 INFO L225 Difference]: With dead ends: 147 [2020-09-25 14:36:33,944 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 14:36:33,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 14:36:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 14:36:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-09-25 14:36:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 14:36:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 14:36:33,951 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 63 [2020-09-25 14:36:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:33,951 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 14:36:33,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:36:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 14:36:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:36:33,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:33,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:33,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:36:33,953 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:33,953 INFO L82 PathProgramCache]: Analyzing trace with hash -80620955, now seen corresponding path program 1 times [2020-09-25 14:36:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:33,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958101643] [2020-09-25 14:36:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking...