/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:29:31,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:29:31,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:29:31,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:29:31,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:29:31,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:29:31,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:29:31,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:29:31,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:29:31,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:29:31,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:29:31,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:29:31,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:29:31,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:29:31,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:29:31,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:29:31,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:29:31,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:29:31,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:29:31,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:29:31,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:29:31,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:29:31,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:29:31,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:29:31,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:29:31,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:29:31,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:29:31,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:29:31,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:29:31,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:29:31,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:29:31,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:29:31,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:29:31,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:29:31,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:29:31,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:29:31,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:29:31,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:29:31,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:29:31,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:29:31,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:29:31,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:29:31,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:29:31,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:29:31,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:29:31,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:29:31,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:29:31,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:29:31,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:29:31,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:29:31,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:29:31,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:29:31,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:29:31,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:29:31,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:29:31,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:29:31,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:29:31,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:29:31,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:29:31,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:29:31,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:29:31,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:29:31,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:29:31,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:29:31,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:29:31,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:29:31,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:29:31,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:29:31,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:29:31,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:29:31,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:29:31,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:29:32,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:29:32,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:29:32,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:29:32,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:29:32,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:29:32,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11.c [2020-10-29 08:29:32,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9a90cdc/6ac450033e154c08969008e0e6f4d0cc/FLAG6c7d568b2 [2020-10-29 08:29:33,533 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:29:33,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label11.c [2020-10-29 08:29:33,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9a90cdc/6ac450033e154c08969008e0e6f4d0cc/FLAG6c7d568b2 [2020-10-29 08:29:34,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9a90cdc/6ac450033e154c08969008e0e6f4d0cc [2020-10-29 08:29:34,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:29:34,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:29:34,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:29:34,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:29:34,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:29:34,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:29:34" (1/1) ... [2020-10-29 08:29:34,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:34, skipping insertion in model container [2020-10-29 08:29:34,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:29:34" (1/1) ... [2020-10-29 08:29:34,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:29:34,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:29:35,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:29:35,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:29:36,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:29:36,042 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:29:36,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36 WrapperNode [2020-10-29 08:29:36,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:29:36,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:29:36,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:29:36,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:29:36,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... [2020-10-29 08:29:36,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:29:36,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:29:36,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:29:36,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:29:36,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:29:36,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:29:36,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:29:36,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:29:36,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:29:36,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:29:36,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:29:36,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:29:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:29:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:29:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:29:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:29:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:29:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:29:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:29:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:29:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:29:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:29:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:29:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:29:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:29:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:29:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:29:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:29:41,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:29:41,460 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:29:41,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:29:41 BoogieIcfgContainer [2020-10-29 08:29:41,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:29:41,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:29:41,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:29:41,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:29:41,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:29:34" (1/3) ... [2020-10-29 08:29:41,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:29:41, skipping insertion in model container [2020-10-29 08:29:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:36" (2/3) ... [2020-10-29 08:29:41,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:29:41, skipping insertion in model container [2020-10-29 08:29:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:29:41" (3/3) ... [2020-10-29 08:29:41,474 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label11.c [2020-10-29 08:29:41,491 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:29:41,499 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:29:41,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:29:41,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:29:41,558 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:29:41,559 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:29:41,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:29:41,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:29:41,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:29:41,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:29:41,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:29:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:29:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 08:29:41,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:41,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:41,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1133938368, now seen corresponding path program 1 times [2020-10-29 08:29:41,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:41,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095671581] [2020-10-29 08:29:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:42,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:42,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 08:29:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-29 08:29:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:42,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 08:29:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:29:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:29:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:42,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:29:42,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095671581] [2020-10-29 08:29:42,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:29:42,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:29:42,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960013980] [2020-10-29 08:29:42,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:29:42,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:42,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:29:42,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:29:42,828 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:30:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:00,016 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-29 08:30:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:30:00,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-29 08:30:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:00,064 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:30:00,064 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:30:00,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:30:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:30:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:30:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3565 transitions. [2020-10-29 08:30:00,308 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3565 transitions. Word has length 49 [2020-10-29 08:30:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:00,310 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3565 transitions. [2020-10-29 08:30:00,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:30:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3565 transitions. [2020-10-29 08:30:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 08:30:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:00,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:00,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:30:00,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash 916959417, now seen corresponding path program 1 times [2020-10-29 08:30:00,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:00,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070232031] [2020-10-29 08:30:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 08:30:01,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-29 08:30:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:01,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:30:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:30:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:01,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:01,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:01,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:30:01,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:01,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:01,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:30:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:01,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:01,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:30:01,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:30:01,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:01,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:30:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:02,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070232031] [2020-10-29 08:30:02,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:02,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:02,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884174197] [2020-10-29 08:30:02,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:02,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:02,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:02,056 INFO L87 Difference]: Start difference. First operand 2136 states and 3565 transitions. Second operand 7 states. [2020-10-29 08:30:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:16,414 INFO L93 Difference]: Finished difference Result 6471 states and 10888 transitions. [2020-10-29 08:30:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:16,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 08:30:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:16,445 INFO L225 Difference]: With dead ends: 6471 [2020-10-29 08:30:16,445 INFO L226 Difference]: Without dead ends: 4341 [2020-10-29 08:30:16,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-29 08:30:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3588. [2020-10-29 08:30:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-29 08:30:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5290 transitions. [2020-10-29 08:30:16,591 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5290 transitions. Word has length 119 [2020-10-29 08:30:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:16,592 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5290 transitions. [2020-10-29 08:30:16,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5290 transitions. [2020-10-29 08:30:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 08:30:16,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:16,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:16,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:30:16,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:16,596 INFO L82 PathProgramCache]: Analyzing trace with hash -5921555, now seen corresponding path program 1 times [2020-10-29 08:30:16,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:16,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752141560] [2020-10-29 08:30:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:30:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-29 08:30:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:17,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:30:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:30:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:17,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:17,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:30:17,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:17,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:30:17,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:17,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:30:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:17,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752141560] [2020-10-29 08:30:17,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:17,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:17,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014650192] [2020-10-29 08:30:17,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:17,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:17,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:17,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:17,932 INFO L87 Difference]: Start difference. First operand 3588 states and 5290 transitions. Second operand 7 states. [2020-10-29 08:30:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:29,436 INFO L93 Difference]: Finished difference Result 8712 states and 12677 transitions. [2020-10-29 08:30:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:29,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-29 08:30:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:29,475 INFO L225 Difference]: With dead ends: 8712 [2020-10-29 08:30:29,476 INFO L226 Difference]: Without dead ends: 5130 [2020-10-29 08:30:29,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:30:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2020-10-29 08:30:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 5102. [2020-10-29 08:30:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5102 states. [2020-10-29 08:30:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 7149 transitions. [2020-10-29 08:30:29,646 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 7149 transitions. Word has length 124 [2020-10-29 08:30:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:29,647 INFO L481 AbstractCegarLoop]: Abstraction has 5102 states and 7149 transitions. [2020-10-29 08:30:29,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 7149 transitions. [2020-10-29 08:30:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 08:30:29,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:29,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:29,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:30:29,650 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:29,650 INFO L82 PathProgramCache]: Analyzing trace with hash -885489383, now seen corresponding path program 1 times [2020-10-29 08:30:29,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:29,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258172745] [2020-10-29 08:30:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 08:30:31,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-29 08:30:31,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:30:31,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:30:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:30:31,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:30:31,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:30:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258172745] [2020-10-29 08:30:31,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:31,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:31,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084368547] [2020-10-29 08:30:31,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:31,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:31,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:31,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:31,665 INFO L87 Difference]: Start difference. First operand 5102 states and 7149 transitions. Second operand 7 states. [2020-10-29 08:30:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:46,596 INFO L93 Difference]: Finished difference Result 14793 states and 21744 transitions. [2020-10-29 08:30:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:30:46,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-29 08:30:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:46,654 INFO L225 Difference]: With dead ends: 14793 [2020-10-29 08:30:46,654 INFO L226 Difference]: Without dead ends: 9697 [2020-10-29 08:30:46,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:30:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2020-10-29 08:30:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 8079. [2020-10-29 08:30:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8079 states. [2020-10-29 08:30:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 10616 transitions. [2020-10-29 08:30:46,951 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 10616 transitions. Word has length 146 [2020-10-29 08:30:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:46,952 INFO L481 AbstractCegarLoop]: Abstraction has 8079 states and 10616 transitions. [2020-10-29 08:30:46,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:46,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 10616 transitions. [2020-10-29 08:30:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 08:30:46,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:46,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:46,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:30:46,956 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:46,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash -861992287, now seen corresponding path program 1 times [2020-10-29 08:30:46,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:46,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082076326] [2020-10-29 08:30:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:47,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:48,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 08:30:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-29 08:30:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:48,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:30:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 08:30:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:48,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:30:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:48,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:48,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:30:48,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 08:30:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:48,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 08:30:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:30:48,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082076326] [2020-10-29 08:30:48,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:48,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:30:48,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20896116] [2020-10-29 08:30:48,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:30:48,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:30:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:30:48,899 INFO L87 Difference]: Start difference. First operand 8079 states and 10616 transitions. Second operand 6 states. [2020-10-29 08:31:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:01,299 INFO L93 Difference]: Finished difference Result 21367 states and 29079 transitions. [2020-10-29 08:31:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:31:01,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-10-29 08:31:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:01,362 INFO L225 Difference]: With dead ends: 21367 [2020-10-29 08:31:01,363 INFO L226 Difference]: Without dead ends: 13294 [2020-10-29 08:31:01,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:31:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13294 states. [2020-10-29 08:31:01,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13294 to 12476. [2020-10-29 08:31:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12476 states. [2020-10-29 08:31:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12476 states to 12476 states and 15911 transitions. [2020-10-29 08:31:01,725 INFO L78 Accepts]: Start accepts. Automaton has 12476 states and 15911 transitions. Word has length 235 [2020-10-29 08:31:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:01,726 INFO L481 AbstractCegarLoop]: Abstraction has 12476 states and 15911 transitions. [2020-10-29 08:31:01,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:31:01,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12476 states and 15911 transitions. [2020-10-29 08:31:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-29 08:31:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:01,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:01,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:31:01,738 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash -154927321, now seen corresponding path program 1 times [2020-10-29 08:31:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:01,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577317438] [2020-10-29 08:31:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:06,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:06,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-29 08:31:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:31:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 08:31:06,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:06,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:31:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:31:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:31:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 08:31:07,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:07,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:31:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:31:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:07,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:31:07,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 08:31:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:07,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:31:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:31:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:07,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:07,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:31:07,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:31:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:07,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:31:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 246 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:31:08,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577317438] [2020-10-29 08:31:08,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:08,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:08,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940371399] [2020-10-29 08:31:08,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:08,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:08,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:08,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:08,041 INFO L87 Difference]: Start difference. First operand 12476 states and 15911 transitions. Second operand 7 states. [2020-10-29 08:31:12,609 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:31:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:22,610 INFO L93 Difference]: Finished difference Result 28036 states and 36833 transitions. [2020-10-29 08:31:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:31:22,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-29 08:31:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:22,664 INFO L225 Difference]: With dead ends: 28036 [2020-10-29 08:31:22,664 INFO L226 Difference]: Without dead ends: 14010 [2020-10-29 08:31:22,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:31:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14010 states. [2020-10-29 08:31:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14010 to 13849. [2020-10-29 08:31:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13849 states. [2020-10-29 08:31:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 15840 transitions. [2020-10-29 08:31:23,221 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 15840 transitions. Word has length 430 [2020-10-29 08:31:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:23,222 INFO L481 AbstractCegarLoop]: Abstraction has 13849 states and 15840 transitions. [2020-10-29 08:31:23,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 15840 transitions. [2020-10-29 08:31:23,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-29 08:31:23,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:23,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:23,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:31:23,232 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:23,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1702156822, now seen corresponding path program 1 times [2020-10-29 08:31:23,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:23,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611226608] [2020-10-29 08:31:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-29 08:31:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:31:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 08:31:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:28,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:31:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:31:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:28,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:28,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:31:28,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:28,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:28,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-29 08:31:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:31:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:31:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:31:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:31:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:31:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:29,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:31:29,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 08:31:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 82 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:31:30,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611226608] [2020-10-29 08:31:30,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:30,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:30,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679395142] [2020-10-29 08:31:30,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:30,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:30,072 INFO L87 Difference]: Start difference. First operand 13849 states and 15840 transitions. Second operand 7 states. [2020-10-29 08:31:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:43,007 INFO L93 Difference]: Finished difference Result 34426 states and 40491 transitions. [2020-10-29 08:31:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:31:43,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-29 08:31:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:43,085 INFO L225 Difference]: With dead ends: 34426 [2020-10-29 08:31:43,085 INFO L226 Difference]: Without dead ends: 20583 [2020-10-29 08:31:43,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:31:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20583 states. [2020-10-29 08:31:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20583 to 19786. [2020-10-29 08:31:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19786 states. [2020-10-29 08:31:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19786 states to 19786 states and 22779 transitions. [2020-10-29 08:31:43,741 INFO L78 Accepts]: Start accepts. Automaton has 19786 states and 22779 transitions. Word has length 453 [2020-10-29 08:31:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 19786 states and 22779 transitions. [2020-10-29 08:31:43,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19786 states and 22779 transitions. [2020-10-29 08:31:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-29 08:31:43,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:43,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:43,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:31:43,781 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash -339147797, now seen corresponding path program 1 times [2020-10-29 08:31:43,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:43,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155401900] [2020-10-29 08:31:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:44,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:31:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:31:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:49,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:31:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:31:49,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:31:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:31:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:31:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:31:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:31:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:50,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:50,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:50,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:50,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:31:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:50,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:31:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:31:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:50,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 08:31:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:31:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:31:51,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155401900] [2020-10-29 08:31:51,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:51,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:51,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108752481] [2020-10-29 08:31:51,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:51,503 INFO L87 Difference]: Start difference. First operand 19786 states and 22779 transitions. Second operand 7 states. [2020-10-29 08:32:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:07,619 INFO L93 Difference]: Finished difference Result 47691 states and 56640 transitions. [2020-10-29 08:32:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:07,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-29 08:32:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:07,718 INFO L225 Difference]: With dead ends: 47691 [2020-10-29 08:32:07,719 INFO L226 Difference]: Without dead ends: 27911 [2020-10-29 08:32:07,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2020-10-29 08:32:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 26362. [2020-10-29 08:32:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26362 states. [2020-10-29 08:32:08,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26362 states to 26362 states and 30269 transitions. [2020-10-29 08:32:08,288 INFO L78 Accepts]: Start accepts. Automaton has 26362 states and 30269 transitions. Word has length 980 [2020-10-29 08:32:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:08,290 INFO L481 AbstractCegarLoop]: Abstraction has 26362 states and 30269 transitions. [2020-10-29 08:32:08,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 26362 states and 30269 transitions. [2020-10-29 08:32:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2020-10-29 08:32:08,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:08,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:08,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:32:08,348 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:08,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1242603514, now seen corresponding path program 1 times [2020-10-29 08:32:08,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:08,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996680263] [2020-10-29 08:32:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:13,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-29 08:32:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-29 08:32:13,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:13,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-29 08:32:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:32:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:14,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:14,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 08:32:14,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:14,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:32:14,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 08:32:15,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:15,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:32:15,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:32:15,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:32:15,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:32:15,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-29 08:32:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 435 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-29 08:32:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996680263] [2020-10-29 08:32:16,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:16,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:16,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196824546] [2020-10-29 08:32:16,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:16,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:16,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:16,329 INFO L87 Difference]: Start difference. First operand 26362 states and 30269 transitions. Second operand 7 states. [2020-10-29 08:32:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:29,306 INFO L93 Difference]: Finished difference Result 67171 states and 78725 transitions. [2020-10-29 08:32:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:29,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1056 [2020-10-29 08:32:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:29,439 INFO L225 Difference]: With dead ends: 67171 [2020-10-29 08:32:29,439 INFO L226 Difference]: Without dead ends: 40815 [2020-10-29 08:32:29,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40815 states. [2020-10-29 08:32:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40815 to 40763. [2020-10-29 08:32:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40763 states. [2020-10-29 08:32:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 46517 transitions. [2020-10-29 08:32:30,248 INFO L78 Accepts]: Start accepts. Automaton has 40763 states and 46517 transitions. Word has length 1056 [2020-10-29 08:32:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:30,250 INFO L481 AbstractCegarLoop]: Abstraction has 40763 states and 46517 transitions. [2020-10-29 08:32:30,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 40763 states and 46517 transitions. [2020-10-29 08:32:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2020-10-29 08:32:30,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:30,268 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:30,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:32:30,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1595112434, now seen corresponding path program 1 times [2020-10-29 08:32:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:30,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832406057] [2020-10-29 08:32:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1147 [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4850 [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:32:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:32:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:35,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:36,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:36,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:32:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:36,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:36,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:32:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:32:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:36,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:32:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 08:32:37,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832406057] [2020-10-29 08:32:37,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:37,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:37,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299526295] [2020-10-29 08:32:37,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:37,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:37,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:37,207 INFO L87 Difference]: Start difference. First operand 40763 states and 46517 transitions. Second operand 7 states. [2020-10-29 08:32:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:51,861 INFO L93 Difference]: Finished difference Result 92925 states and 107575 transitions. [2020-10-29 08:32:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:51,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1123 [2020-10-29 08:32:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:52,032 INFO L225 Difference]: With dead ends: 92925 [2020-10-29 08:32:52,032 INFO L226 Difference]: Without dead ends: 52168 [2020-10-29 08:32:52,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52168 states. [2020-10-29 08:32:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52168 to 51420. [2020-10-29 08:32:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51420 states. [2020-10-29 08:32:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51420 states to 51420 states and 58375 transitions. [2020-10-29 08:32:53,239 INFO L78 Accepts]: Start accepts. Automaton has 51420 states and 58375 transitions. Word has length 1123 [2020-10-29 08:32:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:53,242 INFO L481 AbstractCegarLoop]: Abstraction has 51420 states and 58375 transitions. [2020-10-29 08:32:53,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 51420 states and 58375 transitions. [2020-10-29 08:32:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1221 [2020-10-29 08:32:53,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:53,263 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:53,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:32:53,264 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash -765095643, now seen corresponding path program 1 times [2020-10-29 08:32:53,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:53,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978734170] [2020-10-29 08:32:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:58,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1246 [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:32:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:32:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:59,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:32:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:32:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:33:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:33:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2020-10-29 08:33:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 446 proven. 75 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2020-10-29 08:33:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978734170] [2020-10-29 08:33:00,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:00,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986071297] [2020-10-29 08:33:00,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:00,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:00,764 INFO L87 Difference]: Start difference. First operand 51420 states and 58375 transitions. Second operand 7 states.