/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:26:44,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:26:44,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:26:44,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:26:44,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:26:44,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:26:44,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:26:44,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:26:44,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:26:44,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:26:44,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:26:44,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:26:44,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:26:44,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:26:44,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:26:44,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:26:44,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:26:44,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:26:44,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:26:44,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:26:44,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:26:44,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:26:44,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:26:44,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:26:44,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:26:44,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:26:44,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:26:44,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:26:44,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:26:44,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:26:44,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:26:44,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:26:44,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:26:44,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:26:44,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:26:44,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:26:44,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:26:44,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:26:44,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:26:44,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:26:44,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:26:44,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:26:44,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:26:44,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:26:44,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:26:44,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:26:44,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:26:44,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:26:44,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:26:44,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:26:44,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:26:44,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:26:44,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:26:44,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:26:44,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:26:44,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:26:44,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:26:44,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:26:44,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:26:44,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:26:44,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:26:44,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:26:44,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:26:44,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:26:44,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:26:44,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:26:44,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:26:44,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:26:44,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:26:44,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:26:44,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:26:44,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:26:45,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:26:45,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:26:45,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:26:45,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:26:45,229 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:26:45,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-28 17:26:45,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f55ec57/0eab282b667c4424a1b554b689cbdbc7/FLAG44071a9b5 [2020-10-28 17:26:46,172 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:26:46,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-28 17:26:46,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f55ec57/0eab282b667c4424a1b554b689cbdbc7/FLAG44071a9b5 [2020-10-28 17:26:46,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f55ec57/0eab282b667c4424a1b554b689cbdbc7 [2020-10-28 17:26:46,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:26:46,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:26:46,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:26:46,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:26:46,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:26:46,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:26:46" (1/1) ... [2020-10-28 17:26:46,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56402184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:46, skipping insertion in model container [2020-10-28 17:26:46,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:26:46" (1/1) ... [2020-10-28 17:26:46,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:26:46,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:26:47,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:26:47,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:26:47,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:26:47,366 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:26:47,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47 WrapperNode [2020-10-28 17:26:47,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:26:47,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:26:47,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:26:47,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:26:47,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... [2020-10-28 17:26:47,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:26:47,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:26:47,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:26:47,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:26:47,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:26:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:26:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:26:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 17:26:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 17:26:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:26:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2020-10-28 17:26:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 17:26:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2020-10-28 17:26:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure system_cleanup [2020-10-28 17:26:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2020-10-28 17:26:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hello_message [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure open_message [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure close_message [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2020-10-28 17:26:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2020-10-28 17:26:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2020-10-28 17:26:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure user_initialize [2020-10-28 17:26:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:26:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-28 17:26:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 17:26:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 17:26:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 17:26:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 17:26:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 17:26:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 17:26:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 17:26:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 17:26:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 17:26:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 17:26:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 17:26:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 17:26:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 17:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 17:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 17:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 17:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 17:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 17:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 17:26:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 17:26:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 17:26:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 17:26:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:26:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 17:26:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 17:26:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 17:26:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 17:26:47,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 17:26:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 17:26:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-28 17:26:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-28 17:26:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2020-10-28 17:26:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2020-10-28 17:26:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2020-10-28 17:26:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2020-10-28 17:26:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2020-10-28 17:26:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2020-10-28 17:26:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-28 17:26:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2020-10-28 17:26:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure index [2020-10-28 17:26:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2020-10-28 17:26:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:26:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 17:26:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure system_cleanup [2020-10-28 17:26:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure hello_message [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure open_message [2020-10-28 17:26:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure close_message [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure user_initialize [2020-10-28 17:26:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 17:26:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:26:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:26:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:26:48,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:26:48,729 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:26:48,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:26:48 BoogieIcfgContainer [2020-10-28 17:26:48,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:26:48,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:26:48,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:26:48,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:26:48,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:26:46" (1/3) ... [2020-10-28 17:26:48,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10696978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:26:48, skipping insertion in model container [2020-10-28 17:26:48,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:26:47" (2/3) ... [2020-10-28 17:26:48,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10696978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:26:48, skipping insertion in model container [2020-10-28 17:26:48,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:26:48" (3/3) ... [2020-10-28 17:26:48,740 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2020-10-28 17:26:48,754 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:26:48,760 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:26:48,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:26:48,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:26:48,807 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:26:48,807 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:26:48,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:26:48,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:26:48,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:26:48,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:26:48,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:26:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-28 17:26:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 17:26:48,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:26:48,839 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] [2020-10-28 17:26:48,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:26:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:26:48,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1553772573, now seen corresponding path program 1 times [2020-10-28 17:26:48,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:26:48,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670019160] [2020-10-28 17:26:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:26:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:26:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:26:52,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:26:52,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:26:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3294 [2020-10-28 17:26:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:26:52,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:26:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:26:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:26:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:26:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:26:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:26:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:26:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:52,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:26:52,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:26:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:26:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:26:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:26:52,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:26:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:26:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:26:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:26:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:26:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:26:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:26:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:26:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:26:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:26:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:26:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:26:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:26:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:26:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:52,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:26:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:26:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:26:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:26:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:26:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:26:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:26:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:26:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:26:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:26:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:26:52,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670019160] [2020-10-28 17:26:52,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:26:52,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:26:52,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476812224] [2020-10-28 17:26:52,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:26:52,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:26:52,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:26:52,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:26:52,860 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 11 states. [2020-10-28 17:26:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:26:55,739 INFO L93 Difference]: Finished difference Result 387 states and 551 transitions. [2020-10-28 17:26:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:26:55,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-28 17:26:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:26:55,758 INFO L225 Difference]: With dead ends: 387 [2020-10-28 17:26:55,758 INFO L226 Difference]: Without dead ends: 214 [2020-10-28 17:26:55,766 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 [2020-10-28 17:26:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-28 17:26:55,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 159. [2020-10-28 17:26:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-28 17:26:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2020-10-28 17:26:55,849 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 29 [2020-10-28 17:26:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:26:55,850 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2020-10-28 17:26:55,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:26:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2020-10-28 17:26:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 17:26:55,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:26:55,855 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] [2020-10-28 17:26:55,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:26:55,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:26:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:26:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1503468407, now seen corresponding path program 1 times [2020-10-28 17:26:55,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:26:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160828999] [2020-10-28 17:26:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:26:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:26:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:26:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:00,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 17:27:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:27:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:27:00,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:00,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:27:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:27:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:01,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:01,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:27:01,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:01,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:01,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:01,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:01,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:27:01,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:01,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:01,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:01,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:01,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:27:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:27:01,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:01,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:27:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:27:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:27:01,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160828999] [2020-10-28 17:27:01,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:01,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:27:01,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239269732] [2020-10-28 17:27:01,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:27:01,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:27:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:27:01,182 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand 8 states. [2020-10-28 17:27:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:02,927 INFO L93 Difference]: Finished difference Result 356 states and 496 transitions. [2020-10-28 17:27:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:27:02,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-28 17:27:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:02,938 INFO L225 Difference]: With dead ends: 356 [2020-10-28 17:27:02,938 INFO L226 Difference]: Without dead ends: 220 [2020-10-28 17:27:02,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:27:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-28 17:27:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 164. [2020-10-28 17:27:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-28 17:27:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2020-10-28 17:27:02,984 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 45 [2020-10-28 17:27:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:02,985 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2020-10-28 17:27:02,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:27:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2020-10-28 17:27:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 17:27:02,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:02,989 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] [2020-10-28 17:27:02,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:27:02,989 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1032844947, now seen corresponding path program 1 times [2020-10-28 17:27:02,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:02,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343947447] [2020-10-28 17:27:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:27:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:27:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4333 [2020-10-28 17:27:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:07,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:27:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:27:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:27:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:07,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:07,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:07,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:27:07,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:07,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:07,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:07,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:07,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:27:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:27:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:27:07,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343947447] [2020-10-28 17:27:07,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:07,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:27:07,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194033986] [2020-10-28 17:27:07,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:27:07,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:07,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:27:07,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:27:07,712 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand 12 states. [2020-10-28 17:27:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:11,019 INFO L93 Difference]: Finished difference Result 461 states and 653 transitions. [2020-10-28 17:27:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:27:11,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-28 17:27:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:11,024 INFO L225 Difference]: With dead ends: 461 [2020-10-28 17:27:11,025 INFO L226 Difference]: Without dead ends: 320 [2020-10-28 17:27:11,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-10-28 17:27:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-28 17:27:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 251. [2020-10-28 17:27:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-28 17:27:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 338 transitions. [2020-10-28 17:27:11,106 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 338 transitions. Word has length 46 [2020-10-28 17:27:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:11,106 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 338 transitions. [2020-10-28 17:27:11,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:27:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 338 transitions. [2020-10-28 17:27:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 17:27:11,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:11,111 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] [2020-10-28 17:27:11,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:27:11,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1441669172, now seen corresponding path program 1 times [2020-10-28 17:27:11,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:11,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118538334] [2020-10-28 17:27:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:16,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:27:16,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:27:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:27:16,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:16,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:16,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:16,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:27:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:27:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:16,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:27:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:27:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:27:16,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118538334] [2020-10-28 17:27:16,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:27:16,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:27:16,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72339673] [2020-10-28 17:27:16,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:27:16,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:16,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:27:16,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:27:16,552 INFO L87 Difference]: Start difference. First operand 251 states and 338 transitions. Second operand 10 states. [2020-10-28 17:27:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:19,078 INFO L93 Difference]: Finished difference Result 587 states and 854 transitions. [2020-10-28 17:27:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:27:19,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-28 17:27:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:19,087 INFO L225 Difference]: With dead ends: 587 [2020-10-28 17:27:19,087 INFO L226 Difference]: Without dead ends: 324 [2020-10-28 17:27:19,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:27:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-28 17:27:19,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 259. [2020-10-28 17:27:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-28 17:27:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 345 transitions. [2020-10-28 17:27:19,164 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 345 transitions. Word has length 46 [2020-10-28 17:27:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:19,166 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 345 transitions. [2020-10-28 17:27:19,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:27:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 345 transitions. [2020-10-28 17:27:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:27:19,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:19,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:19,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:27:19,174 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:19,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1886416777, now seen corresponding path program 1 times [2020-10-28 17:27:19,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:19,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713512128] [2020-10-28 17:27:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:19,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 17:27:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:27:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:24,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:27:24,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:27:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:27:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:27:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:24,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:27:24,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713512128] [2020-10-28 17:27:24,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:24,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:27:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334047202] [2020-10-28 17:27:24,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:27:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:27:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:27:24,715 INFO L87 Difference]: Start difference. First operand 259 states and 345 transitions. Second operand 12 states. [2020-10-28 17:27:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:27,616 INFO L93 Difference]: Finished difference Result 600 states and 891 transitions. [2020-10-28 17:27:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:27:27,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-28 17:27:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:27,624 INFO L225 Difference]: With dead ends: 600 [2020-10-28 17:27:27,624 INFO L226 Difference]: Without dead ends: 372 [2020-10-28 17:27:27,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:27:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-28 17:27:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 327. [2020-10-28 17:27:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-28 17:27:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 446 transitions. [2020-10-28 17:27:27,671 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 446 transitions. Word has length 68 [2020-10-28 17:27:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:27,672 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 446 transitions. [2020-10-28 17:27:27,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:27:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 446 transitions. [2020-10-28 17:27:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:27:27,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:27,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:27,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:27:27,675 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:27,675 INFO L82 PathProgramCache]: Analyzing trace with hash -232892581, now seen corresponding path program 1 times [2020-10-28 17:27:27,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:27,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216551810] [2020-10-28 17:27:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:27:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:27:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5450 [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:27:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:27:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:33,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:27:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:33,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:27:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:33,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:27:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:27:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:27:33,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216551810] [2020-10-28 17:27:33,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:33,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:27:33,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010534009] [2020-10-28 17:27:33,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:27:33,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:27:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:27:33,440 INFO L87 Difference]: Start difference. First operand 327 states and 446 transitions. Second operand 9 states. [2020-10-28 17:27:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:35,115 INFO L93 Difference]: Finished difference Result 673 states and 1010 transitions. [2020-10-28 17:27:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:27:35,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-28 17:27:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:35,121 INFO L225 Difference]: With dead ends: 673 [2020-10-28 17:27:35,121 INFO L226 Difference]: Without dead ends: 377 [2020-10-28 17:27:35,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:27:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-28 17:27:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 331. [2020-10-28 17:27:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-28 17:27:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 452 transitions. [2020-10-28 17:27:35,168 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 452 transitions. Word has length 72 [2020-10-28 17:27:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:35,168 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 452 transitions. [2020-10-28 17:27:35,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:27:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 452 transitions. [2020-10-28 17:27:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 17:27:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:35,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:35,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:27:35,171 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash -985965579, now seen corresponding path program 1 times [2020-10-28 17:27:35,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:35,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781645814] [2020-10-28 17:27:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:27:40,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:27:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:27:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:40,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:40,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:27:40,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:40,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:40,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:40,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:27:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:40,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:27:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:40,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:40,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:27:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:40,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:40,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:27:40,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:27:40,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:40,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:27:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:27:40,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781645814] [2020-10-28 17:27:40,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:27:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978079918] [2020-10-28 17:27:40,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:27:40,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:27:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:27:40,577 INFO L87 Difference]: Start difference. First operand 331 states and 452 transitions. Second operand 9 states. [2020-10-28 17:27:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:42,384 INFO L93 Difference]: Finished difference Result 679 states and 1018 transitions. [2020-10-28 17:27:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:27:42,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-28 17:27:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:42,390 INFO L225 Difference]: With dead ends: 679 [2020-10-28 17:27:42,390 INFO L226 Difference]: Without dead ends: 379 [2020-10-28 17:27:42,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:27:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-28 17:27:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 333. [2020-10-28 17:27:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-28 17:27:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 454 transitions. [2020-10-28 17:27:42,458 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 454 transitions. Word has length 73 [2020-10-28 17:27:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:42,458 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 454 transitions. [2020-10-28 17:27:42,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:27:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 454 transitions. [2020-10-28 17:27:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:27:42,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:42,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:42,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:27:42,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 998770553, now seen corresponding path program 1 times [2020-10-28 17:27:42,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:42,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734919548] [2020-10-28 17:27:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 17:27:48,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:27:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5789 [2020-10-28 17:27:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 17:27:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:27:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:48,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:48,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:27:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:27:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:27:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:27:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:27:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:48,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:27:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:48,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:27:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:27:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 17:27:48,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734919548] [2020-10-28 17:27:48,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:48,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:27:48,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988646205] [2020-10-28 17:27:48,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:27:48,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:48,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:27:48,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:27:48,538 INFO L87 Difference]: Start difference. First operand 333 states and 454 transitions. Second operand 8 states. [2020-10-28 17:27:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:50,122 INFO L93 Difference]: Finished difference Result 679 states and 1021 transitions. [2020-10-28 17:27:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:27:50,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-28 17:27:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:50,129 INFO L225 Difference]: With dead ends: 679 [2020-10-28 17:27:50,129 INFO L226 Difference]: Without dead ends: 373 [2020-10-28 17:27:50,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:27:50,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-28 17:27:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 333. [2020-10-28 17:27:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-28 17:27:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 451 transitions. [2020-10-28 17:27:50,172 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 451 transitions. Word has length 78 [2020-10-28 17:27:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 451 transitions. [2020-10-28 17:27:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:27:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 451 transitions. [2020-10-28 17:27:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 17:27:50,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:50,179 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] [2020-10-28 17:27:50,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:27:50,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1542917265, now seen corresponding path program 1 times [2020-10-28 17:27:50,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:50,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539098082] [2020-10-28 17:27:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:27:57,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6906 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:27:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:57,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:27:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:27:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:27:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:27:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:27:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:27:57,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:27:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:27:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:27:57,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:27:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:27:57,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539098082] [2020-10-28 17:27:57,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:27:57,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:27:57,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900873431] [2020-10-28 17:27:57,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:27:57,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:57,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:27:57,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:27:57,476 INFO L87 Difference]: Start difference. First operand 333 states and 451 transitions. Second operand 10 states. [2020-10-28 17:27:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:59,838 INFO L93 Difference]: Finished difference Result 774 states and 1152 transitions. [2020-10-28 17:27:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:27:59,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-28 17:27:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:59,845 INFO L225 Difference]: With dead ends: 774 [2020-10-28 17:27:59,845 INFO L226 Difference]: Without dead ends: 472 [2020-10-28 17:27:59,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:27:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-28 17:27:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 406. [2020-10-28 17:27:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-28 17:27:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 560 transitions. [2020-10-28 17:27:59,891 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 560 transitions. Word has length 79 [2020-10-28 17:27:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:59,892 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 560 transitions. [2020-10-28 17:27:59,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:27:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 560 transitions. [2020-10-28 17:27:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 17:27:59,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:59,894 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] [2020-10-28 17:27:59,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:27:59,895 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:59,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash -708646731, now seen corresponding path program 1 times [2020-10-28 17:27:59,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:59,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814234338] [2020-10-28 17:27:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:04,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:28:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:28:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:28:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:28:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:28:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:28:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:28:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:28:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:05,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:28:05,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814234338] [2020-10-28 17:28:05,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:05,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:28:05,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108114752] [2020-10-28 17:28:05,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:28:05,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:05,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:28:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:28:05,253 INFO L87 Difference]: Start difference. First operand 406 states and 560 transitions. Second operand 11 states. [2020-10-28 17:28:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:07,876 INFO L93 Difference]: Finished difference Result 873 states and 1376 transitions. [2020-10-28 17:28:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:28:07,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-28 17:28:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:07,883 INFO L225 Difference]: With dead ends: 873 [2020-10-28 17:28:07,883 INFO L226 Difference]: Without dead ends: 498 [2020-10-28 17:28:07,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:28:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-28 17:28:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 488. [2020-10-28 17:28:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-28 17:28:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 704 transitions. [2020-10-28 17:28:07,938 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 704 transitions. Word has length 79 [2020-10-28 17:28:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:07,939 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 704 transitions. [2020-10-28 17:28:07,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:28:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 704 transitions. [2020-10-28 17:28:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:28:07,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:07,941 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, 1] [2020-10-28 17:28:07,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:28:07,942 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash 858950363, now seen corresponding path program 1 times [2020-10-28 17:28:07,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:07,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79197886] [2020-10-28 17:28:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:28:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 17:28:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:28:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:28:13,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:28:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:28:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:28:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:28:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:28:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:28:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:28:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:28:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:28:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:28:13,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79197886] [2020-10-28 17:28:13,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:13,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:28:13,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928912613] [2020-10-28 17:28:13,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:28:13,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:28:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:28:13,477 INFO L87 Difference]: Start difference. First operand 488 states and 704 transitions. Second operand 18 states. [2020-10-28 17:28:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:20,683 INFO L93 Difference]: Finished difference Result 1361 states and 2350 transitions. [2020-10-28 17:28:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 17:28:20,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-28 17:28:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:20,695 INFO L225 Difference]: With dead ends: 1361 [2020-10-28 17:28:20,695 INFO L226 Difference]: Without dead ends: 904 [2020-10-28 17:28:20,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=494, Invalid=2698, Unknown=0, NotChecked=0, Total=3192 [2020-10-28 17:28:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-28 17:28:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 862. [2020-10-28 17:28:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-28 17:28:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1292 transitions. [2020-10-28 17:28:20,798 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1292 transitions. Word has length 80 [2020-10-28 17:28:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:20,799 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1292 transitions. [2020-10-28 17:28:20,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:28:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1292 transitions. [2020-10-28 17:28:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:28:20,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:20,801 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] [2020-10-28 17:28:20,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:28:20,802 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:20,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2082707236, now seen corresponding path program 1 times [2020-10-28 17:28:20,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:20,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344673535] [2020-10-28 17:28:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:25,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 17:28:25,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:28:25,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:25,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:28:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 17:28:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:28:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:28:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:28:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:28:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:28:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:28:26,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:28:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:28:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:28:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:26,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:28:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:28:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:28:26,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344673535] [2020-10-28 17:28:26,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:26,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:28:26,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725009250] [2020-10-28 17:28:26,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:28:26,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:26,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:28:26,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:28:26,340 INFO L87 Difference]: Start difference. First operand 862 states and 1292 transitions. Second operand 19 states. [2020-10-28 17:28:27,289 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-28 17:28:27,430 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-28 17:28:27,587 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-28 17:28:31,288 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-28 17:28:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:34,679 INFO L93 Difference]: Finished difference Result 2166 states and 3747 transitions. [2020-10-28 17:28:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 17:28:34,680 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-28 17:28:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:34,694 INFO L225 Difference]: With dead ends: 2166 [2020-10-28 17:28:34,694 INFO L226 Difference]: Without dead ends: 1335 [2020-10-28 17:28:34,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=589, Invalid=3193, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 17:28:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-28 17:28:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1266. [2020-10-28 17:28:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-28 17:28:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1945 transitions. [2020-10-28 17:28:34,835 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1945 transitions. Word has length 80 [2020-10-28 17:28:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:34,835 INFO L481 AbstractCegarLoop]: Abstraction has 1266 states and 1945 transitions. [2020-10-28 17:28:34,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:28:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1945 transitions. [2020-10-28 17:28:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:28:34,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:34,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-28 17:28:34,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:28:34,839 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash 429867238, now seen corresponding path program 1 times [2020-10-28 17:28:34,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:34,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348967512] [2020-10-28 17:28:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:28:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6324 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:28:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:28:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:28:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:41,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:28:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:28:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:28:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:28:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:41,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:28:41,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348967512] [2020-10-28 17:28:41,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:41,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:28:41,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112846946] [2020-10-28 17:28:41,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:28:41,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:41,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:28:41,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:28:41,506 INFO L87 Difference]: Start difference. First operand 1266 states and 1945 transitions. Second operand 11 states. [2020-10-28 17:28:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:44,146 INFO L93 Difference]: Finished difference Result 2666 states and 4676 transitions. [2020-10-28 17:28:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:28:44,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-28 17:28:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:44,162 INFO L225 Difference]: With dead ends: 2666 [2020-10-28 17:28:44,162 INFO L226 Difference]: Without dead ends: 1431 [2020-10-28 17:28:44,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:28:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-10-28 17:28:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1369. [2020-10-28 17:28:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2020-10-28 17:28:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2150 transitions. [2020-10-28 17:28:44,313 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2150 transitions. Word has length 85 [2020-10-28 17:28:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:44,313 INFO L481 AbstractCegarLoop]: Abstraction has 1369 states and 2150 transitions. [2020-10-28 17:28:44,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:28:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2150 transitions. [2020-10-28 17:28:44,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:28:44,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:44,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-28 17:28:44,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:28:44,317 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash 873767912, now seen corresponding path program 1 times [2020-10-28 17:28:44,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:44,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785586903] [2020-10-28 17:28:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6250 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 17:28:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:28:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:28:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:28:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:50,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:28:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:28:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:28:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:50,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:28:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:28:50,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785586903] [2020-10-28 17:28:50,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:50,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:28:50,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144326380] [2020-10-28 17:28:50,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:28:50,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:50,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:28:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:28:50,931 INFO L87 Difference]: Start difference. First operand 1369 states and 2150 transitions. Second operand 12 states. [2020-10-28 17:28:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:54,744 INFO L93 Difference]: Finished difference Result 2979 states and 5437 transitions. [2020-10-28 17:28:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:28:54,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-28 17:28:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:54,762 INFO L225 Difference]: With dead ends: 2979 [2020-10-28 17:28:54,762 INFO L226 Difference]: Without dead ends: 1618 [2020-10-28 17:28:54,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:28:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2020-10-28 17:28:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1564. [2020-10-28 17:28:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-28 17:28:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2558 transitions. [2020-10-28 17:28:54,941 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2558 transitions. Word has length 85 [2020-10-28 17:28:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:54,942 INFO L481 AbstractCegarLoop]: Abstraction has 1564 states and 2558 transitions. [2020-10-28 17:28:54,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:28:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2558 transitions. [2020-10-28 17:28:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:28:54,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:54,947 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2020-10-28 17:28:54,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:28:54,947 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:54,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1999968522, now seen corresponding path program 1 times [2020-10-28 17:28:54,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:54,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128433768] [2020-10-28 17:28:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:29:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:00,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:00,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:29:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:29:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:29:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:29:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:29:00,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:29:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:29:00,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128433768] [2020-10-28 17:29:00,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:00,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:00,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505455837] [2020-10-28 17:29:00,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:00,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:00,454 INFO L87 Difference]: Start difference. First operand 1564 states and 2558 transitions. Second operand 11 states. [2020-10-28 17:29:00,854 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 17:29:02,514 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-28 17:29:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:03,854 INFO L93 Difference]: Finished difference Result 3928 states and 7877 transitions. [2020-10-28 17:29:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:29:03,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-10-28 17:29:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:03,887 INFO L225 Difference]: With dead ends: 3928 [2020-10-28 17:29:03,888 INFO L226 Difference]: Without dead ends: 2384 [2020-10-28 17:29:03,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:29:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-10-28 17:29:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2275. [2020-10-28 17:29:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2275 states. [2020-10-28 17:29:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 4088 transitions. [2020-10-28 17:29:04,178 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 4088 transitions. Word has length 86 [2020-10-28 17:29:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:04,179 INFO L481 AbstractCegarLoop]: Abstraction has 2275 states and 4088 transitions. [2020-10-28 17:29:04,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 4088 transitions. [2020-10-28 17:29:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 17:29:04,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:04,185 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:04,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:29:04,185 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1045853382, now seen corresponding path program 1 times [2020-10-28 17:29:04,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:04,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656215241] [2020-10-28 17:29:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:29:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:29:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:29:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:29:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:29:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:29:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:29:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:29:09,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656215241] [2020-10-28 17:29:09,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:09,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:29:09,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623525769] [2020-10-28 17:29:09,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:29:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:09,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:29:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:29:09,617 INFO L87 Difference]: Start difference. First operand 2275 states and 4088 transitions. Second operand 12 states. [2020-10-28 17:29:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:13,178 INFO L93 Difference]: Finished difference Result 5139 states and 11332 transitions. [2020-10-28 17:29:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 17:29:13,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-28 17:29:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:13,214 INFO L225 Difference]: With dead ends: 5139 [2020-10-28 17:29:13,214 INFO L226 Difference]: Without dead ends: 2871 [2020-10-28 17:29:13,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:29:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-10-28 17:29:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2760. [2020-10-28 17:29:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2020-10-28 17:29:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 5172 transitions. [2020-10-28 17:29:13,567 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 5172 transitions. Word has length 88 [2020-10-28 17:29:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:13,568 INFO L481 AbstractCegarLoop]: Abstraction has 2760 states and 5172 transitions. [2020-10-28 17:29:13,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:29:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 5172 transitions. [2020-10-28 17:29:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 17:29:13,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:13,573 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, 1] [2020-10-28 17:29:13,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:29:13,573 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash -725921823, now seen corresponding path program 1 times [2020-10-28 17:29:13,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:13,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98978424] [2020-10-28 17:29:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 17:29:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:29:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:18,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:29:18,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:29:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:18,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:29:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:18,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:18,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:18,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:18,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:29:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:19,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:19,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 17:29:19,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:19,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:29:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:29:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:19,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:19,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:29:19,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:29:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:19,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:29:19,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:29:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:19,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:29:19,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:29:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:19,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:29:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:29:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:29:19,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98978424] [2020-10-28 17:29:19,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:19,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:19,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831960615] [2020-10-28 17:29:19,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:19,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:19,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:19,239 INFO L87 Difference]: Start difference. First operand 2760 states and 5172 transitions. Second operand 11 states. [2020-10-28 17:29:19,780 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-28 17:29:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:21,983 INFO L93 Difference]: Finished difference Result 5710 states and 12518 transitions. [2020-10-28 17:29:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:29:21,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-28 17:29:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:22,015 INFO L225 Difference]: With dead ends: 5710 [2020-10-28 17:29:22,015 INFO L226 Difference]: Without dead ends: 2970 [2020-10-28 17:29:22,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:29:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-10-28 17:29:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2884. [2020-10-28 17:29:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2020-10-28 17:29:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 5164 transitions. [2020-10-28 17:29:22,375 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 5164 transitions. Word has length 88 [2020-10-28 17:29:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:22,376 INFO L481 AbstractCegarLoop]: Abstraction has 2884 states and 5164 transitions. [2020-10-28 17:29:22,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 5164 transitions. [2020-10-28 17:29:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:29:22,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:22,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:22,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:29:22,385 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:22,385 INFO L82 PathProgramCache]: Analyzing trace with hash -926919947, now seen corresponding path program 1 times [2020-10-28 17:29:22,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:22,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753750932] [2020-10-28 17:29:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:29:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:27,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:29:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:29:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:27,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:29:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:29:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:29:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:29:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:29:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:29:28,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753750932] [2020-10-28 17:29:28,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:28,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:28,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486920123] [2020-10-28 17:29:28,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:28,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:28,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:28,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:28,268 INFO L87 Difference]: Start difference. First operand 2884 states and 5164 transitions. Second operand 11 states. [2020-10-28 17:29:29,016 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-28 17:29:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:31,636 INFO L93 Difference]: Finished difference Result 7790 states and 17949 transitions. [2020-10-28 17:29:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:29:31,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-10-28 17:29:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:31,679 INFO L225 Difference]: With dead ends: 7790 [2020-10-28 17:29:31,679 INFO L226 Difference]: Without dead ends: 4926 [2020-10-28 17:29:31,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:29:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2020-10-28 17:29:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4760. [2020-10-28 17:29:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4760 states. [2020-10-28 17:29:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 9373 transitions. [2020-10-28 17:29:32,284 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 9373 transitions. Word has length 91 [2020-10-28 17:29:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:32,285 INFO L481 AbstractCegarLoop]: Abstraction has 4760 states and 9373 transitions. [2020-10-28 17:29:32,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 9373 transitions. [2020-10-28 17:29:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 17:29:32,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:32,295 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2020-10-28 17:29:32,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:29:32,295 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:32,296 INFO L82 PathProgramCache]: Analyzing trace with hash 483282753, now seen corresponding path program 1 times [2020-10-28 17:29:32,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:32,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051272275] [2020-10-28 17:29:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 17:29:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:29:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:29:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:29:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:29:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:29:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:37,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:29:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:29:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-28 17:29:39,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:29:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:29:39,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 17:29:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-28 17:29:39,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051272275] [2020-10-28 17:29:39,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:39,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 17:29:39,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594281114] [2020-10-28 17:29:39,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:29:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:29:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:29:39,361 INFO L87 Difference]: Start difference. First operand 4760 states and 9373 transitions. Second operand 15 states. [2020-10-28 17:29:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:42,481 INFO L93 Difference]: Finished difference Result 9712 states and 24129 transitions. [2020-10-28 17:29:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:29:42,482 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2020-10-28 17:29:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:42,516 INFO L225 Difference]: With dead ends: 9712 [2020-10-28 17:29:42,516 INFO L226 Difference]: Without dead ends: 4972 [2020-10-28 17:29:42,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-10-28 17:29:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2020-10-28 17:29:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 4763. [2020-10-28 17:29:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2020-10-28 17:29:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 9380 transitions. [2020-10-28 17:29:43,101 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 9380 transitions. Word has length 115 [2020-10-28 17:29:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:43,102 INFO L481 AbstractCegarLoop]: Abstraction has 4763 states and 9380 transitions. [2020-10-28 17:29:43,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:29:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 9380 transitions. [2020-10-28 17:29:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 17:29:43,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:43,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:43,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:29:43,117 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:43,118 INFO L82 PathProgramCache]: Analyzing trace with hash -416581759, now seen corresponding path program 1 times [2020-10-28 17:29:43,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:43,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226414847] [2020-10-28 17:29:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:29:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:29:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:29:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:48,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:29:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:29:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:29:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1454 [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:29:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:29:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:49,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 17:29:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:29:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:29:50,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226414847] [2020-10-28 17:29:50,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:50,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 17:29:50,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12073229] [2020-10-28 17:29:50,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:29:50,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:50,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:29:50,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:29:50,053 INFO L87 Difference]: Start difference. First operand 4763 states and 9380 transitions. Second operand 15 states. [2020-10-28 17:29:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:52,980 INFO L93 Difference]: Finished difference Result 9715 states and 24136 transitions. [2020-10-28 17:29:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:29:52,981 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-10-28 17:29:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:53,025 INFO L225 Difference]: With dead ends: 9715 [2020-10-28 17:29:53,025 INFO L226 Difference]: Without dead ends: 4972 [2020-10-28 17:29:53,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-10-28 17:29:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2020-10-28 17:29:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 4761. [2020-10-28 17:29:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4761 states. [2020-10-28 17:29:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 9374 transitions. [2020-10-28 17:29:53,623 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 9374 transitions. Word has length 94 [2020-10-28 17:29:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:53,624 INFO L481 AbstractCegarLoop]: Abstraction has 4761 states and 9374 transitions. [2020-10-28 17:29:53,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:29:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 9374 transitions. [2020-10-28 17:29:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:29:53,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:53,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:53,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:29:53,639 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1863265077, now seen corresponding path program 1 times [2020-10-28 17:29:53,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:53,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003525661] [2020-10-28 17:29:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15422 [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:30:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:30:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:30:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:30:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 17:30:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:30:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:30:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:30:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:30:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:30:09,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:30:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:30:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:30:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:30:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:30:09,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:30:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:30:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:30:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:30:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 17:30:09,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003525661] [2020-10-28 17:30:09,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:09,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:30:09,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769902077] [2020-10-28 17:30:09,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:30:09,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:09,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:30:09,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:30:09,569 INFO L87 Difference]: Start difference. First operand 4761 states and 9374 transitions. Second operand 14 states. [2020-10-28 17:30:10,469 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-28 17:30:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:14,860 INFO L93 Difference]: Finished difference Result 11260 states and 22358 transitions. [2020-10-28 17:30:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:30:14,861 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-28 17:30:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:14,913 INFO L225 Difference]: With dead ends: 11260 [2020-10-28 17:30:14,914 INFO L226 Difference]: Without dead ends: 6519 [2020-10-28 17:30:14,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:30:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states.