/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:40:11,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:40:11,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:40:11,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:40:11,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:40:11,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:40:11,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:40:11,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:40:11,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:40:11,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:40:11,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:40:11,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:40:11,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:40:11,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:40:11,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:40:11,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:40:11,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:40:11,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:40:11,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:40:11,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:40:11,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:40:11,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:40:11,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:40:11,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:40:11,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:40:11,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:40:11,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:40:11,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:40:11,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:40:11,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:40:11,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:40:11,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:40:11,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:40:11,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:40:11,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:40:11,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:40:11,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:40:11,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:40:11,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:40:11,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:40:11,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:40:11,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 22:40:11,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:40:11,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:40:11,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:40:11,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:40:11,752 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:40:11,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:40:11,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:40:11,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:40:11,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:40:11,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:40:11,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:40:11,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:40:11,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:40:11,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:40:11,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:40:11,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:40:11,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:40:11,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:40:11,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:40:11,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:40:11,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:40:11,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:40:11,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:40:11,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:40:11,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:40:11,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:40:11,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:40:11,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:40:11,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:40:11,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:40:12,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:40:12,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:40:12,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:40:12,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:40:12,206 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:40:12,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-27 22:40:12,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba82d9d6/3ad81f5a84fe4067bb0d43fef8f0122c/FLAGc9eec6e93 [2020-10-27 22:40:13,124 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:40:13,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-27 22:40:13,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba82d9d6/3ad81f5a84fe4067bb0d43fef8f0122c/FLAGc9eec6e93 [2020-10-27 22:40:13,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba82d9d6/3ad81f5a84fe4067bb0d43fef8f0122c [2020-10-27 22:40:13,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:40:13,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:40:13,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:13,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:40:13,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:40:13,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:13" (1/1) ... [2020-10-27 22:40:13,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0abc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:13, skipping insertion in model container [2020-10-27 22:40:13,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:13" (1/1) ... [2020-10-27 22:40:13,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:40:13,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:40:14,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:14,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:40:14,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:14,318 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:40:14,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14 WrapperNode [2020-10-27 22:40:14,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:14,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:40:14,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:40:14,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:40:14,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:40:14,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:40:14,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:40:14,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:40:14,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:40:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:40:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:40:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 22:40:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 22:40:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:40:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2020-10-27 22:40:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure system_cleanup [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure hello_message [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure open_message [2020-10-27 22:40:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure close_message [2020-10-27 22:40:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2020-10-27 22:40:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2020-10-27 22:40:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2020-10-27 22:40:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure user_initialize [2020-10-27 22:40:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:40:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-27 22:40:14,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 22:40:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 22:40:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 22:40:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 22:40:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 22:40:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 22:40:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 22:40:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 22:40:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 22:40:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 22:40:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 22:40:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 22:40:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 22:40:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 22:40:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 22:40:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 22:40:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 22:40:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 22:40:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 22:40:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 22:40:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 22:40:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 22:40:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 22:40:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 22:40:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 22:40:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 22:40:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 22:40:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 22:40:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 22:40:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 22:40:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 22:40:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 22:40:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 22:40:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 22:40:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:40:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 22:40:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 22:40:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 22:40:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 22:40:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 22:40:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 22:40:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 22:40:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 22:40:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-27 22:40:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2020-10-27 22:40:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2020-10-27 22:40:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2020-10-27 22:40:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2020-10-27 22:40:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure index [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2020-10-27 22:40:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:40:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 22:40:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure system_cleanup [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-27 22:40:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure hello_message [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure open_message [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure close_message [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 22:40:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2020-10-27 22:40:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure user_initialize [2020-10-27 22:40:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 22:40:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:40:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:40:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:40:15,987 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:40:15,987 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:40:15,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:15 BoogieIcfgContainer [2020-10-27 22:40:15,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:40:15,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:40:15,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:40:15,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:40:15,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:40:13" (1/3) ... [2020-10-27 22:40:15,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4133470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:15, skipping insertion in model container [2020-10-27 22:40:15,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (2/3) ... [2020-10-27 22:40:15,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4133470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:15, skipping insertion in model container [2020-10-27 22:40:15,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:15" (3/3) ... [2020-10-27 22:40:15,998 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2020-10-27 22:40:16,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:40:16,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:40:16,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:40:16,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:40:16,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:40:16,058 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:40:16,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:40:16,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:40:16,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:40:16,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:40:16,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:40:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-27 22:40:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 22:40:16,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:16,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:16,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1553772573, now seen corresponding path program 1 times [2020-10-27 22:40:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:16,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178554395] [2020-10-27 22:40:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:16,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:19,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:40:19,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:40:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-27 22:40:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:40:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:40:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:40:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:40:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:40:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:20,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:20,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:40:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:40:20,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:40:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:20,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:20,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:20,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:40:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:40:20,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178554395] [2020-10-27 22:40:20,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:20,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:40:20,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311528590] [2020-10-27 22:40:20,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:40:20,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:40:20,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:40:20,351 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 11 states. [2020-10-27 22:40:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:23,870 INFO L93 Difference]: Finished difference Result 387 states and 551 transitions. [2020-10-27 22:40:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:40:23,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-27 22:40:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:23,900 INFO L225 Difference]: With dead ends: 387 [2020-10-27 22:40:23,900 INFO L226 Difference]: Without dead ends: 214 [2020-10-27 22:40:23,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:40:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-27 22:40:23,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 159. [2020-10-27 22:40:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 22:40:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2020-10-27 22:40:23,997 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 29 [2020-10-27 22:40:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:23,997 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2020-10-27 22:40:23,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:40:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2020-10-27 22:40:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 22:40:24,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:24,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:24,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:40:24,003 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1503468407, now seen corresponding path program 1 times [2020-10-27 22:40:24,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:24,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505549875] [2020-10-27 22:40:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:29,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 22:40:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:40:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:29,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:29,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:40:29,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:29,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:40:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:40:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:40:29,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:40:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:40:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:40:29,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505549875] [2020-10-27 22:40:29,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:29,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:40:29,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410529811] [2020-10-27 22:40:29,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:40:29,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:40:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:40:29,515 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand 14 states. [2020-10-27 22:40:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:33,602 INFO L93 Difference]: Finished difference Result 396 states and 573 transitions. [2020-10-27 22:40:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:40:33,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-27 22:40:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:33,609 INFO L225 Difference]: With dead ends: 396 [2020-10-27 22:40:33,609 INFO L226 Difference]: Without dead ends: 258 [2020-10-27 22:40:33,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:40:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-27 22:40:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 231. [2020-10-27 22:40:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-27 22:40:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 313 transitions. [2020-10-27 22:40:33,710 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 313 transitions. Word has length 45 [2020-10-27 22:40:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:33,711 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 313 transitions. [2020-10-27 22:40:33,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:40:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 313 transitions. [2020-10-27 22:40:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 22:40:33,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:33,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:33,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:40:33,727 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2043962197, now seen corresponding path program 1 times [2020-10-27 22:40:33,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:33,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053248587] [2020-10-27 22:40:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:38,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:38,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:40:38,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:40:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:40:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:40:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:40:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:40:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:40:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:40:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:39,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:39,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:40:39,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:40:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:40:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:40:39,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053248587] [2020-10-27 22:40:39,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:39,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:40:39,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72594651] [2020-10-27 22:40:39,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:40:39,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:39,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:40:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:40:39,137 INFO L87 Difference]: Start difference. First operand 231 states and 313 transitions. Second operand 11 states. [2020-10-27 22:40:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:43,126 INFO L93 Difference]: Finished difference Result 586 states and 866 transitions. [2020-10-27 22:40:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:40:43,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-27 22:40:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:43,136 INFO L225 Difference]: With dead ends: 586 [2020-10-27 22:40:43,136 INFO L226 Difference]: Without dead ends: 375 [2020-10-27 22:40:43,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:40:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-27 22:40:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 324. [2020-10-27 22:40:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-27 22:40:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2020-10-27 22:40:43,232 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 46 [2020-10-27 22:40:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:43,234 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2020-10-27 22:40:43,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:40:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2020-10-27 22:40:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 22:40:43,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:43,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:43,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:40:43,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:43,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1947739777, now seen corresponding path program 1 times [2020-10-27 22:40:43,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:43,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061727705] [2020-10-27 22:40:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 22:40:48,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 22:40:48,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:40:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 22:40:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:40:48,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:40:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:40:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:40:48,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:40:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:40:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:40:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:40:48,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:40:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:40:48,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061727705] [2020-10-27 22:40:48,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:48,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:40:48,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623129599] [2020-10-27 22:40:48,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:40:48,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:40:48,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:40:48,703 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand 12 states. [2020-10-27 22:40:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:52,055 INFO L93 Difference]: Finished difference Result 726 states and 1122 transitions. [2020-10-27 22:40:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:40:52,059 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-27 22:40:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:52,069 INFO L225 Difference]: With dead ends: 726 [2020-10-27 22:40:52,069 INFO L226 Difference]: Without dead ends: 422 [2020-10-27 22:40:52,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:40:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-27 22:40:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 365. [2020-10-27 22:40:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-27 22:40:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 517 transitions. [2020-10-27 22:40:52,144 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 517 transitions. Word has length 51 [2020-10-27 22:40:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:52,145 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 517 transitions. [2020-10-27 22:40:52,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:40:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 517 transitions. [2020-10-27 22:40:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 22:40:52,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:52,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:52,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:40:52,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1329845841, now seen corresponding path program 1 times [2020-10-27 22:40:52,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:52,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567610861] [2020-10-27 22:40:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 22:40:57,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:40:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 22:40:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:40:57,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:40:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:40:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:40:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:40:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:40:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:40:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:40:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:40:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:57,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 22:40:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:40:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:40:57,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567610861] [2020-10-27 22:40:57,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:57,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:40:57,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269428175] [2020-10-27 22:40:57,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:40:57,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:57,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:40:57,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:40:57,516 INFO L87 Difference]: Start difference. First operand 365 states and 517 transitions. Second operand 9 states. [2020-10-27 22:40:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:59,414 INFO L93 Difference]: Finished difference Result 772 states and 1210 transitions. [2020-10-27 22:40:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:40:59,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-27 22:40:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:59,420 INFO L225 Difference]: With dead ends: 772 [2020-10-27 22:40:59,420 INFO L226 Difference]: Without dead ends: 427 [2020-10-27 22:40:59,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:40:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-27 22:40:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 369. [2020-10-27 22:40:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-27 22:40:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 523 transitions. [2020-10-27 22:40:59,467 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 523 transitions. Word has length 55 [2020-10-27 22:40:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:59,468 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 523 transitions. [2020-10-27 22:40:59,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:40:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 523 transitions. [2020-10-27 22:40:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 22:40:59,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:59,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:59,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:40:59,471 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash 214285247, now seen corresponding path program 1 times [2020-10-27 22:40:59,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:59,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121717483] [2020-10-27 22:40:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:41:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:41:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:41:04,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:41:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 22:41:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:41:04,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:04,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:41:04,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 22:41:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:41:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:41:04,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:41:04,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:41:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:41:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:41:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121717483] [2020-10-27 22:41:04,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:41:04,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:41:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738624004] [2020-10-27 22:41:04,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:41:04,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:04,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:41:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:41:04,805 INFO L87 Difference]: Start difference. First operand 369 states and 523 transitions. Second operand 9 states. [2020-10-27 22:41:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:06,763 INFO L93 Difference]: Finished difference Result 778 states and 1218 transitions. [2020-10-27 22:41:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:41:06,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 22:41:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:06,768 INFO L225 Difference]: With dead ends: 778 [2020-10-27 22:41:06,769 INFO L226 Difference]: Without dead ends: 429 [2020-10-27 22:41:06,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-27 22:41:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 371. [2020-10-27 22:41:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-27 22:41:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 525 transitions. [2020-10-27 22:41:06,814 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 525 transitions. Word has length 56 [2020-10-27 22:41:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:06,817 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 525 transitions. [2020-10-27 22:41:06,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:41:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 525 transitions. [2020-10-27 22:41:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 22:41:06,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:06,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:41:06,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash 726515392, now seen corresponding path program 1 times [2020-10-27 22:41:06,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:06,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211845164] [2020-10-27 22:41:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:41:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:41:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:12,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:12,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:12,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:12,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:41:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:12,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:12,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:12,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:41:12,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:12,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:12,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:12,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:41:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:41:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:41:12,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211845164] [2020-10-27 22:41:12,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:41:12,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:41:12,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380777337] [2020-10-27 22:41:12,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:41:12,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:12,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:41:12,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:41:12,258 INFO L87 Difference]: Start difference. First operand 371 states and 525 transitions. Second operand 12 states. [2020-10-27 22:41:13,004 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 22:41:13,207 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 22:41:13,517 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 22:41:15,048 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-27 22:41:15,238 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-27 22:41:15,471 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 22:41:15,680 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 22:41:16,696 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 22:41:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:18,503 INFO L93 Difference]: Finished difference Result 1101 states and 1790 transitions. [2020-10-27 22:41:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 22:41:18,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 22:41:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:18,514 INFO L225 Difference]: With dead ends: 1101 [2020-10-27 22:41:18,514 INFO L226 Difference]: Without dead ends: 750 [2020-10-27 22:41:18,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:41:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-27 22:41:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 538. [2020-10-27 22:41:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-27 22:41:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 793 transitions. [2020-10-27 22:41:18,591 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 793 transitions. Word has length 63 [2020-10-27 22:41:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:18,591 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 793 transitions. [2020-10-27 22:41:18,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:41:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 793 transitions. [2020-10-27 22:41:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:41:18,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:18,595 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:18,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:41:18,595 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1189828883, now seen corresponding path program 1 times [2020-10-27 22:41:18,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:18,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787796726] [2020-10-27 22:41:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6202 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 22:41:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:41:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:41:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:41:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:41:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:41:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:25,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:25,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:41:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:41:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:41:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:41:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:41:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:41:25,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787796726] [2020-10-27 22:41:25,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:25,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:41:25,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183568594] [2020-10-27 22:41:25,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:41:25,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:25,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:41:25,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:41:25,189 INFO L87 Difference]: Start difference. First operand 538 states and 793 transitions. Second operand 9 states. [2020-10-27 22:41:26,020 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-27 22:41:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:27,855 INFO L93 Difference]: Finished difference Result 1253 states and 2065 transitions. [2020-10-27 22:41:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:41:27,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-27 22:41:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:27,866 INFO L225 Difference]: With dead ends: 1253 [2020-10-27 22:41:27,866 INFO L226 Difference]: Without dead ends: 735 [2020-10-27 22:41:27,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:41:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-27 22:41:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 637. [2020-10-27 22:41:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-27 22:41:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 950 transitions. [2020-10-27 22:41:27,950 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 950 transitions. Word has length 79 [2020-10-27 22:41:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:27,951 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 950 transitions. [2020-10-27 22:41:27,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:41:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 950 transitions. [2020-10-27 22:41:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:41:27,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:27,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:27,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:41:27,956 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1061735113, now seen corresponding path program 1 times [2020-10-27 22:41:27,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:27,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569732858] [2020-10-27 22:41:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 22:41:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:41:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:41:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:33,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:33,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:41:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:33,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:33,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:41:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:33,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:41:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:41:33,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:41:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:41:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:33,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 22:41:33,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569732858] [2020-10-27 22:41:33,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:41:33,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:41:33,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892208199] [2020-10-27 22:41:33,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:41:33,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:33,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:41:33,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:33,417 INFO L87 Difference]: Start difference. First operand 637 states and 950 transitions. Second operand 11 states. [2020-10-27 22:41:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:36,713 INFO L93 Difference]: Finished difference Result 1429 states and 2538 transitions. [2020-10-27 22:41:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:41:36,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-27 22:41:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:36,726 INFO L225 Difference]: With dead ends: 1429 [2020-10-27 22:41:36,726 INFO L226 Difference]: Without dead ends: 812 [2020-10-27 22:41:36,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:41:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-27 22:41:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 793. [2020-10-27 22:41:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-10-27 22:41:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1278 transitions. [2020-10-27 22:41:36,857 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1278 transitions. Word has length 79 [2020-10-27 22:41:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:36,859 INFO L481 AbstractCegarLoop]: Abstraction has 793 states and 1278 transitions. [2020-10-27 22:41:36,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:41:36,859 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1278 transitions. [2020-10-27 22:41:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 22:41:36,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:36,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:36,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:41:36,867 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1399338731, now seen corresponding path program 1 times [2020-10-27 22:41:36,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:36,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392190553] [2020-10-27 22:41:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:40,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:41:42,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:42,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:42,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:41:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:42,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:42,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:41:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:42,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:41:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:41:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:41:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:41:42,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392190553] [2020-10-27 22:41:42,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:41:42,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:41:42,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051681962] [2020-10-27 22:41:42,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:41:42,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:42,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:41:42,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:42,268 INFO L87 Difference]: Start difference. First operand 793 states and 1278 transitions. Second operand 11 states. [2020-10-27 22:41:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:46,395 INFO L93 Difference]: Finished difference Result 1706 states and 3181 transitions. [2020-10-27 22:41:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:41:46,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-27 22:41:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:46,409 INFO L225 Difference]: With dead ends: 1706 [2020-10-27 22:41:46,410 INFO L226 Difference]: Without dead ends: 933 [2020-10-27 22:41:46,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:41:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-27 22:41:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 915. [2020-10-27 22:41:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-27 22:41:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1477 transitions. [2020-10-27 22:41:46,526 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1477 transitions. Word has length 64 [2020-10-27 22:41:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:46,527 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1477 transitions. [2020-10-27 22:41:46,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:41:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1477 transitions. [2020-10-27 22:41:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 22:41:46,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:46,530 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-10-27 22:41:46,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:41:46,531 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1542318868, now seen corresponding path program 1 times [2020-10-27 22:41:46,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:46,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948925061] [2020-10-27 22:41:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:41:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:41:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:41:51,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:41:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 22:41:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 22:41:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:51,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:51,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:41:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:41:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:41:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:41:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:51,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:41:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:41:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:41:51,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948925061] [2020-10-27 22:41:51,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:51,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 22:41:51,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054814138] [2020-10-27 22:41:51,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:41:51,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:51,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:41:51,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:41:51,993 INFO L87 Difference]: Start difference. First operand 915 states and 1477 transitions. Second operand 14 states. [2020-10-27 22:41:53,689 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-27 22:41:55,087 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-27 22:41:55,287 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 22:41:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:55,796 INFO L93 Difference]: Finished difference Result 1910 states and 3521 transitions. [2020-10-27 22:41:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:41:55,798 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-27 22:41:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:55,811 INFO L225 Difference]: With dead ends: 1910 [2020-10-27 22:41:55,812 INFO L226 Difference]: Without dead ends: 1015 [2020-10-27 22:41:55,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:41:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-27 22:41:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 946. [2020-10-27 22:41:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2020-10-27 22:41:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1530 transitions. [2020-10-27 22:41:55,923 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1530 transitions. Word has length 64 [2020-10-27 22:41:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:55,923 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1530 transitions. [2020-10-27 22:41:55,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:41:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1530 transitions. [2020-10-27 22:41:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 22:41:55,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:55,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:55,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:41:55,927 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1011043375, now seen corresponding path program 1 times [2020-10-27 22:41:55,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:55,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471486401] [2020-10-27 22:41:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:55,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:00,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 22:42:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:42:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:42:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 22:42:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:42:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:42:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:42:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:42:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:42:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:42:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:42:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 22:42:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:42:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:42:01,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471486401] [2020-10-27 22:42:01,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:01,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:42:01,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630446438] [2020-10-27 22:42:01,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:42:01,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:42:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:42:01,661 INFO L87 Difference]: Start difference. First operand 946 states and 1530 transitions. Second operand 17 states. [2020-10-27 22:42:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:09,807 INFO L93 Difference]: Finished difference Result 2853 states and 5939 transitions. [2020-10-27 22:42:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:42:09,808 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-10-27 22:42:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:09,839 INFO L225 Difference]: With dead ends: 2853 [2020-10-27 22:42:09,839 INFO L226 Difference]: Without dead ends: 1923 [2020-10-27 22:42:09,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=428, Invalid=2122, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:42:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-27 22:42:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1767. [2020-10-27 22:42:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-27 22:42:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3390 transitions. [2020-10-27 22:42:10,067 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3390 transitions. Word has length 63 [2020-10-27 22:42:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:10,068 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 3390 transitions. [2020-10-27 22:42:10,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:42:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3390 transitions. [2020-10-27 22:42:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 22:42:10,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:10,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:10,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:42:10,072 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash -143545190, now seen corresponding path program 1 times [2020-10-27 22:42:10,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:10,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387024428] [2020-10-27 22:42:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 22:42:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:42:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:42:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:42:15,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:42:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:42:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:15,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:42:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:15,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:15,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:42:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:15,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:42:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:42:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:42:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 22:42:15,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387024428] [2020-10-27 22:42:15,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:42:15,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:42:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764749939] [2020-10-27 22:42:15,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:42:15,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:42:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:42:15,384 INFO L87 Difference]: Start difference. First operand 1767 states and 3390 transitions. Second operand 11 states. [2020-10-27 22:42:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:18,251 INFO L93 Difference]: Finished difference Result 3673 states and 8763 transitions. [2020-10-27 22:42:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:42:18,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 22:42:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:18,283 INFO L225 Difference]: With dead ends: 3673 [2020-10-27 22:42:18,283 INFO L226 Difference]: Without dead ends: 1926 [2020-10-27 22:42:18,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:42:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-10-27 22:42:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1844. [2020-10-27 22:42:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2020-10-27 22:42:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 3638 transitions. [2020-10-27 22:42:18,542 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 3638 transitions. Word has length 80 [2020-10-27 22:42:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:18,543 INFO L481 AbstractCegarLoop]: Abstraction has 1844 states and 3638 transitions. [2020-10-27 22:42:18,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:42:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 3638 transitions. [2020-10-27 22:42:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 22:42:18,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:18,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:18,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:42:18,548 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash 342266322, now seen corresponding path program 1 times [2020-10-27 22:42:18,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:18,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879585397] [2020-10-27 22:42:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:19,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:42:23,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:42:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:42:23,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 22:42:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:42:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:42:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 22:42:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:23,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:23,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:42:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:42:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:42:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:42:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:42:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 22:42:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:24,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:42:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:42:24,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879585397] [2020-10-27 22:42:24,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:24,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:42:24,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136156402] [2020-10-27 22:42:24,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:42:24,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:24,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:42:24,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:42:24,169 INFO L87 Difference]: Start difference. First operand 1844 states and 3638 transitions. Second operand 18 states. [2020-10-27 22:42:25,529 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 22:42:25,714 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 22:42:25,893 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 22:42:28,948 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-27 22:42:30,132 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-27 22:42:30,441 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-27 22:42:32,609 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:42:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:34,824 INFO L93 Difference]: Finished difference Result 5163 states and 13464 transitions. [2020-10-27 22:42:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:42:34,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-27 22:42:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:34,882 INFO L225 Difference]: With dead ends: 5163 [2020-10-27 22:42:34,882 INFO L226 Difference]: Without dead ends: 3331 [2020-10-27 22:42:34,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=519, Invalid=2673, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 22:42:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2020-10-27 22:42:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3178. [2020-10-27 22:42:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-27 22:42:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 7344 transitions. [2020-10-27 22:42:35,334 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 7344 transitions. Word has length 63 [2020-10-27 22:42:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:35,334 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 7344 transitions. [2020-10-27 22:42:35,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:42:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 7344 transitions. [2020-10-27 22:42:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:42:35,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:35,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:35,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:42:35,340 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash -396528906, now seen corresponding path program 1 times [2020-10-27 22:42:35,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:35,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548986793] [2020-10-27 22:42:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 22:42:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:42:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:42:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:42:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:42:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:42:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:40,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:42:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:42:40,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548986793] [2020-10-27 22:42:40,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:42:40,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:42:40,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167642902] [2020-10-27 22:42:40,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:42:40,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:40,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:42:40,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:42:40,756 INFO L87 Difference]: Start difference. First operand 3178 states and 7344 transitions. Second operand 12 states. [2020-10-27 22:42:41,415 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-27 22:42:41,607 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 22:42:41,800 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-27 22:42:43,231 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 22:42:43,429 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 22:42:43,646 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 22:42:43,974 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-27 22:42:44,897 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-27 22:42:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:46,584 INFO L93 Difference]: Finished difference Result 6628 states and 19263 transitions. [2020-10-27 22:42:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 22:42:46,585 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-27 22:42:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:46,636 INFO L225 Difference]: With dead ends: 6628 [2020-10-27 22:42:46,636 INFO L226 Difference]: Without dead ends: 3466 [2020-10-27 22:42:46,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:42:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2020-10-27 22:42:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3256. [2020-10-27 22:42:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3256 states. [2020-10-27 22:42:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 7669 transitions. [2020-10-27 22:42:47,114 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 7669 transitions. Word has length 70 [2020-10-27 22:42:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:47,114 INFO L481 AbstractCegarLoop]: Abstraction has 3256 states and 7669 transitions. [2020-10-27 22:42:47,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:42:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 7669 transitions. [2020-10-27 22:42:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:42:47,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:47,120 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:47,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:42:47,120 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash -300513134, now seen corresponding path program 1 times [2020-10-27 22:42:47,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:47,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886752285] [2020-10-27 22:42:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 22:42:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 22:42:52,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:42:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 22:42:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:42:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:42:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:42:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:42:52,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:42:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:42:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:42:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:42:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:42:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:42:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:52,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:42:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:42:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 22:42:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:42:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:42:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:42:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 22:42:52,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886752285] [2020-10-27 22:42:52,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:52,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:42:52,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466659905] [2020-10-27 22:42:52,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:42:52,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:42:52,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:42:52,684 INFO L87 Difference]: Start difference. First operand 3256 states and 7669 transitions. Second operand 11 states. [2020-10-27 22:42:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:55,478 INFO L93 Difference]: Finished difference Result 6607 states and 19712 transitions. [2020-10-27 22:42:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:42:55,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-27 22:42:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:55,519 INFO L225 Difference]: With dead ends: 6607 [2020-10-27 22:42:55,519 INFO L226 Difference]: Without dead ends: 3371 [2020-10-27 22:42:55,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:42:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2020-10-27 22:42:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3263. [2020-10-27 22:42:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2020-10-27 22:42:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 7650 transitions. [2020-10-27 22:42:55,959 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 7650 transitions. Word has length 90 [2020-10-27 22:42:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:55,960 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 7650 transitions. [2020-10-27 22:42:55,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:42:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 7650 transitions. [2020-10-27 22:42:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 22:42:55,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:55,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:55,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:42:55,966 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2030802514, now seen corresponding path program 2 times [2020-10-27 22:42:55,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:55,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22095916] [2020-10-27 22:42:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:43:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 22:43:01,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 22:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:43:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:43:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:43:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:43:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 22:43:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:43:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:43:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:43:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:43:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:43:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:43:01,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22095916] [2020-10-27 22:43:01,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:01,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:43:01,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268666900] [2020-10-27 22:43:01,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:43:01,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:43:01,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:43:01,402 INFO L87 Difference]: Start difference. First operand 3263 states and 7650 transitions. Second operand 11 states. [2020-10-27 22:43:01,898 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 22:43:03,006 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 22:43:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:04,965 INFO L93 Difference]: Finished difference Result 7812 states and 24879 transitions. [2020-10-27 22:43:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:43:04,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-27 22:43:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:05,021 INFO L225 Difference]: With dead ends: 7812 [2020-10-27 22:43:05,022 INFO L226 Difference]: Without dead ends: 4569 [2020-10-27 22:43:05,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:43:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2020-10-27 22:43:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 4407. [2020-10-27 22:43:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4407 states. [2020-10-27 22:43:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 11608 transitions. [2020-10-27 22:43:05,716 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 11608 transitions. Word has length 68 [2020-10-27 22:43:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:05,716 INFO L481 AbstractCegarLoop]: Abstraction has 4407 states and 11608 transitions. [2020-10-27 22:43:05,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:43:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 11608 transitions. [2020-10-27 22:43:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:43:05,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:05,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:05,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:43:05,724 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1577729733, now seen corresponding path program 1 times [2020-10-27 22:43:05,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:05,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050061703] [2020-10-27 22:43:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:43:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:43:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:43:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:43:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:43:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:43:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:43:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:43:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:11,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:43:11,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:43:11,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:43:11,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:43:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:43:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:43:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:43:11,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050061703] [2020-10-27 22:43:11,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:11,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:43:11,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822406469] [2020-10-27 22:43:11,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:43:11,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:11,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:43:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:43:11,236 INFO L87 Difference]: Start difference. First operand 4407 states and 11608 transitions. Second operand 11 states. [2020-10-27 22:43:11,872 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-27 22:43:12,016 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-27 22:43:15,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:15,224 INFO L93 Difference]: Finished difference Result 9419 states and 30874 transitions. [2020-10-27 22:43:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:43:15,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-27 22:43:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:15,287 INFO L225 Difference]: With dead ends: 9419 [2020-10-27 22:43:15,287 INFO L226 Difference]: Without dead ends: 5030 [2020-10-27 22:43:15,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:43:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2020-10-27 22:43:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 4987. [2020-10-27 22:43:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4987 states. [2020-10-27 22:43:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 12583 transitions. [2020-10-27 22:43:16,168 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 12583 transitions. Word has length 87 [2020-10-27 22:43:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:16,168 INFO L481 AbstractCegarLoop]: Abstraction has 4987 states and 12583 transitions. [2020-10-27 22:43:16,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:43:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 12583 transitions. [2020-10-27 22:43:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 22:43:16,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:16,183 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:16,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:43:16,183 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1600447968, now seen corresponding path program 1 times [2020-10-27 22:43:16,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:16,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859339323] [2020-10-27 22:43:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5932 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:43:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:43:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 22:43:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:43:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:22,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:43:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:43:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:43:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 22:43:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:43:27,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 22:43:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:43:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:43:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:43:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:43:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:43:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:29,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:43:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:43:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 22:43:29,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:43:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:43:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:43:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:43:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 22:43:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:43:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:43:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 22:43:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:43:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 22:43:30,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859339323] [2020-10-27 22:43:30,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:43:30,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:43:30,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392814911] [2020-10-27 22:43:30,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:43:30,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:30,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:43:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:43:30,074 INFO L87 Difference]: Start difference. First operand 4987 states and 12583 transitions. Second operand 14 states. [2020-10-27 22:43:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:33,377 INFO L93 Difference]: Finished difference Result 10074 states and 33160 transitions. [2020-10-27 22:43:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:43:33,378 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-10-27 22:43:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:33,456 INFO L225 Difference]: With dead ends: 10074 [2020-10-27 22:43:33,457 INFO L226 Difference]: Without dead ends: 5096 [2020-10-27 22:43:33,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:43:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2020-10-27 22:43:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 4982. [2020-10-27 22:43:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4982 states. [2020-10-27 22:43:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 12579 transitions. [2020-10-27 22:43:34,349 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 12579 transitions. Word has length 121 [2020-10-27 22:43:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:34,349 INFO L481 AbstractCegarLoop]: Abstraction has 4982 states and 12579 transitions. [2020-10-27 22:43:34,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:43:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 12579 transitions. [2020-10-27 22:43:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 22:43:34,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:34,364 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:34,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:43:34,365 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash -375009978, now seen corresponding path program 1 times [2020-10-27 22:43:34,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:34,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933003584] [2020-10-27 22:43:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking...