/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:03:19,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:03:19,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:03:19,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:03:19,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:03:19,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:03:19,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:03:19,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:03:19,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:03:19,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:03:19,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:03:19,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:03:19,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:03:19,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:03:19,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:03:19,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:03:19,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:03:19,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:03:19,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:03:19,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:03:19,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:03:19,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:03:19,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:03:19,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:03:19,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:03:19,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:03:19,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:03:19,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:03:19,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:03:19,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:03:19,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:03:19,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:03:19,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:03:19,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:03:19,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:03:19,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:03:19,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:03:19,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:03:19,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:03:19,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:03:19,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:03:19,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:03:19,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:03:19,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:03:19,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:03:19,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:03:19,895 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:03:19,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:03:19,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:03:19,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:03:19,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:03:19,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:03:19,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:03:19,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:03:19,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:03:19,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:03:19,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:03:19,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:03:19,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:03:19,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:03:19,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:03:19,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:03:19,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:03:19,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:03:19,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:03:19,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:03:19,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:03:19,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:03:19,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:03:19,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:03:19,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:03:19,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:03:20,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:03:20,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:03:20,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:03:20,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:03:20,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:03:20,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2020-10-28 12:03:20,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10c2f123e/93fc33cf098d46f183a52d1853c39252/FLAG41a496ffc [2020-10-28 12:03:21,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:03:21,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2020-10-28 12:03:21,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10c2f123e/93fc33cf098d46f183a52d1853c39252/FLAG41a496ffc [2020-10-28 12:03:21,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10c2f123e/93fc33cf098d46f183a52d1853c39252 [2020-10-28 12:03:21,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:03:21,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:03:21,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:03:21,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:03:21,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:03:21,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:21" (1/1) ... [2020-10-28 12:03:21,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d846b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:21, skipping insertion in model container [2020-10-28 12:03:21,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:21" (1/1) ... [2020-10-28 12:03:21,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:03:21,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:03:22,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:03:22,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:03:22,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:03:22,687 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:03:22,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22 WrapperNode [2020-10-28 12:03:22,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:03:22,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:03:22,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:03:22,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:03:22,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... [2020-10-28 12:03:22,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:03:22,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:03:22,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:03:22,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:03:22,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:03:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:03:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:03:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:03:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:03:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:03:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:03:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:03:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:03:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:03:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:03:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:03:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:03:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:03:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:03:24,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:03:24,931 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:03:24,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:24 BoogieIcfgContainer [2020-10-28 12:03:24,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:03:24,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:03:24,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:03:24,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:03:24,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:03:21" (1/3) ... [2020-10-28 12:03:24,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d374e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:24, skipping insertion in model container [2020-10-28 12:03:24,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:22" (2/3) ... [2020-10-28 12:03:24,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d374e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:24, skipping insertion in model container [2020-10-28 12:03:24,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:24" (3/3) ... [2020-10-28 12:03:24,945 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label13.c [2020-10-28 12:03:24,959 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:03:24,966 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:03:24,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:03:25,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:03:25,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:03:25,015 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:03:25,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:03:25,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:03:25,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:03:25,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:03:25,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:03:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:03:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 12:03:25,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:25,052 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] [2020-10-28 12:03:25,053 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:25,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:25,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2060137216, now seen corresponding path program 1 times [2020-10-28 12:03:25,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:25,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533830170] [2020-10-28 12:03:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:25,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 12:03:25,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-28 12:03:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:25,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:03:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:03:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 12:03:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:03:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:03:26,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:26,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:26,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533830170] [2020-10-28 12:03:26,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:03:26,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:03:26,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312718688] [2020-10-28 12:03:26,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:26,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:26,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:26,254 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-28 12:03:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:31,050 INFO L93 Difference]: Finished difference Result 997 states and 1783 transitions. [2020-10-28 12:03:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:03:31,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 12:03:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:31,094 INFO L225 Difference]: With dead ends: 997 [2020-10-28 12:03:31,095 INFO L226 Difference]: Without dead ends: 631 [2020-10-28 12:03:31,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-28 12:03:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2020-10-28 12:03:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-28 12:03:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 865 transitions. [2020-10-28 12:03:31,231 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 865 transitions. Word has length 40 [2020-10-28 12:03:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:31,232 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 865 transitions. [2020-10-28 12:03:31,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 865 transitions. [2020-10-28 12:03:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 12:03:31,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:31,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:31,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:03:31,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:31,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash -77116580, now seen corresponding path program 1 times [2020-10-28 12:03:31,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:31,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487454060] [2020-10-28 12:03:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 12:03:33,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-10-28 12:03:33,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:33,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:03:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:03:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:03:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:03:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:03:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:03:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:33,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:03:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:33,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487454060] [2020-10-28 12:03:33,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:03:33,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:03:33,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885885311] [2020-10-28 12:03:33,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:33,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:33,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:33,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:33,494 INFO L87 Difference]: Start difference. First operand 625 states and 865 transitions. Second operand 7 states. [2020-10-28 12:03:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:36,920 INFO L93 Difference]: Finished difference Result 1873 states and 2658 transitions. [2020-10-28 12:03:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:03:36,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-28 12:03:36,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:36,931 INFO L225 Difference]: With dead ends: 1873 [2020-10-28 12:03:36,932 INFO L226 Difference]: Without dead ends: 1254 [2020-10-28 12:03:36,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-28 12:03:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1216. [2020-10-28 12:03:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-28 12:03:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1619 transitions. [2020-10-28 12:03:37,006 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1619 transitions. Word has length 112 [2020-10-28 12:03:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:37,007 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1619 transitions. [2020-10-28 12:03:37,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1619 transitions. [2020-10-28 12:03:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 12:03:37,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:37,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:37,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:03:37,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:37,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1661763112, now seen corresponding path program 1 times [2020-10-28 12:03:37,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:37,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450502577] [2020-10-28 12:03:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:37,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:39,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:39,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:03:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:03:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:03:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:39,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:39,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:39,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:03:39,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:39,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:03:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:03:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:39,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450502577] [2020-10-28 12:03:39,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:03:39,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:03:39,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130421101] [2020-10-28 12:03:39,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:39,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:39,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:39,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:39,896 INFO L87 Difference]: Start difference. First operand 1216 states and 1619 transitions. Second operand 7 states. [2020-10-28 12:03:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:43,319 INFO L93 Difference]: Finished difference Result 3055 states and 4051 transitions. [2020-10-28 12:03:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:43,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 12:03:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:43,334 INFO L225 Difference]: With dead ends: 3055 [2020-10-28 12:03:43,334 INFO L226 Difference]: Without dead ends: 1845 [2020-10-28 12:03:43,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-10-28 12:03:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1813. [2020-10-28 12:03:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-10-28 12:03:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2282 transitions. [2020-10-28 12:03:43,426 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2282 transitions. Word has length 114 [2020-10-28 12:03:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:43,428 INFO L481 AbstractCegarLoop]: Abstraction has 1813 states and 2282 transitions. [2020-10-28 12:03:43,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2282 transitions. [2020-10-28 12:03:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 12:03:43,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:43,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:43,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:03:43,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1733634349, now seen corresponding path program 1 times [2020-10-28 12:03:43,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:43,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649235637] [2020-10-28 12:03:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:43,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:03:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-28 12:03:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:43,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 12:03:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:44,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:44,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:03:44,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:44,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:44,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:44,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:44,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:03:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:44,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:44,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:44,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649235637] [2020-10-28 12:03:44,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:44,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:03:44,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143549943] [2020-10-28 12:03:44,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:03:44,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:03:44,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:44,468 INFO L87 Difference]: Start difference. First operand 1813 states and 2282 transitions. Second operand 6 states. [2020-10-28 12:03:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:47,461 INFO L93 Difference]: Finished difference Result 4021 states and 5238 transitions. [2020-10-28 12:03:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:47,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-28 12:03:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:47,483 INFO L225 Difference]: With dead ends: 4021 [2020-10-28 12:03:47,483 INFO L226 Difference]: Without dead ends: 2592 [2020-10-28 12:03:47,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-28 12:03:47,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2581. [2020-10-28 12:03:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-28 12:03:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3305 transitions. [2020-10-28 12:03:47,595 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3305 transitions. Word has length 171 [2020-10-28 12:03:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:47,597 INFO L481 AbstractCegarLoop]: Abstraction has 2581 states and 3305 transitions. [2020-10-28 12:03:47,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3305 transitions. [2020-10-28 12:03:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 12:03:47,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:47,604 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:03:47,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:03:47,604 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1979624514, now seen corresponding path program 1 times [2020-10-28 12:03:47,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:47,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104213233] [2020-10-28 12:03:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 12:03:50,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3007 [2020-10-28 12:03:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:03:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:03:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:03:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:03:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:51,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:03:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:51,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:03:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:03:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:51,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:51,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:03:51,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:03:51,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:51,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:03:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:03:51,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104213233] [2020-10-28 12:03:51,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:51,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:03:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981312325] [2020-10-28 12:03:51,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:03:51,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:03:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:51,415 INFO L87 Difference]: Start difference. First operand 2581 states and 3305 transitions. Second operand 6 states. [2020-10-28 12:03:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:54,852 INFO L93 Difference]: Finished difference Result 6748 states and 9074 transitions. [2020-10-28 12:03:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:03:54,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-28 12:03:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:54,880 INFO L225 Difference]: With dead ends: 6748 [2020-10-28 12:03:54,881 INFO L226 Difference]: Without dead ends: 4551 [2020-10-28 12:03:54,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:03:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2020-10-28 12:03:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4343. [2020-10-28 12:03:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4343 states. [2020-10-28 12:03:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 5713 transitions. [2020-10-28 12:03:55,026 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 5713 transitions. Word has length 236 [2020-10-28 12:03:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:55,027 INFO L481 AbstractCegarLoop]: Abstraction has 4343 states and 5713 transitions. [2020-10-28 12:03:55,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 5713 transitions. [2020-10-28 12:03:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 12:03:55,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:55,032 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:03:55,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:03:55,033 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1727525773, now seen corresponding path program 1 times [2020-10-28 12:03:55,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:55,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691403554] [2020-10-28 12:03:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 12:03:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 12:03:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:03:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:03:57,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:03:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:57,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691403554] [2020-10-28 12:03:57,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:57,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:57,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863027470] [2020-10-28 12:03:57,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:57,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:57,699 INFO L87 Difference]: Start difference. First operand 4343 states and 5713 transitions. Second operand 7 states. [2020-10-28 12:04:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:01,384 INFO L93 Difference]: Finished difference Result 9517 states and 12826 transitions. [2020-10-28 12:04:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:01,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-28 12:04:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:01,416 INFO L225 Difference]: With dead ends: 9517 [2020-10-28 12:04:01,417 INFO L226 Difference]: Without dead ends: 5558 [2020-10-28 12:04:01,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2020-10-28 12:04:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5535. [2020-10-28 12:04:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5535 states. [2020-10-28 12:04:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 7254 transitions. [2020-10-28 12:04:01,596 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 7254 transitions. Word has length 241 [2020-10-28 12:04:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:01,597 INFO L481 AbstractCegarLoop]: Abstraction has 5535 states and 7254 transitions. [2020-10-28 12:04:01,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 7254 transitions. [2020-10-28 12:04:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-28 12:04:01,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:01,605 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:01,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:04:01,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2059579970, now seen corresponding path program 1 times [2020-10-28 12:04:01,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:01,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108491770] [2020-10-28 12:04:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:02,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-28 12:04:02,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-28 12:04:02,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:02,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:04:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 12:04:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:04:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:03,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:04:03,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:04:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:04:03,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:04:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 12:04:03,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108491770] [2020-10-28 12:04:03,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:03,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:03,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898561699] [2020-10-28 12:04:03,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:03,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:03,489 INFO L87 Difference]: Start difference. First operand 5535 states and 7254 transitions. Second operand 5 states. [2020-10-28 12:04:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:06,474 INFO L93 Difference]: Finished difference Result 10685 states and 14685 transitions. [2020-10-28 12:04:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:06,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-10-28 12:04:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:06,516 INFO L225 Difference]: With dead ends: 10685 [2020-10-28 12:04:06,517 INFO L226 Difference]: Without dead ends: 6895 [2020-10-28 12:04:06,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:06,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2020-10-28 12:04:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6889. [2020-10-28 12:04:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6889 states. [2020-10-28 12:04:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 9048 transitions. [2020-10-28 12:04:06,736 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 9048 transitions. Word has length 267 [2020-10-28 12:04:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:06,737 INFO L481 AbstractCegarLoop]: Abstraction has 6889 states and 9048 transitions. [2020-10-28 12:04:06,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 9048 transitions. [2020-10-28 12:04:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-28 12:04:06,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:06,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:06,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:04:06,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:06,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1606418838, now seen corresponding path program 1 times [2020-10-28 12:04:06,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:06,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171725510] [2020-10-28 12:04:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:08,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:08,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-28 12:04:08,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2164 [2020-10-28 12:04:08,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:08,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:04:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:04:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:04:09,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:04:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:04:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:04:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:04:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:04:09,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 12:04:09,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:04:10,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171725510] [2020-10-28 12:04:10,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:10,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:04:10,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245679918] [2020-10-28 12:04:10,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:10,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:10,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:10,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:10,005 INFO L87 Difference]: Start difference. First operand 6889 states and 9048 transitions. Second operand 6 states. [2020-10-28 12:04:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:13,526 INFO L93 Difference]: Finished difference Result 15133 states and 21733 transitions. [2020-10-28 12:04:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:04:13,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-28 12:04:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:13,579 INFO L225 Difference]: With dead ends: 15133 [2020-10-28 12:04:13,579 INFO L226 Difference]: Without dead ends: 8628 [2020-10-28 12:04:13,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2020-10-28 12:04:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 8268. [2020-10-28 12:04:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8268 states. [2020-10-28 12:04:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 10746 transitions. [2020-10-28 12:04:13,919 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 10746 transitions. Word has length 267 [2020-10-28 12:04:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:13,919 INFO L481 AbstractCegarLoop]: Abstraction has 8268 states and 10746 transitions. [2020-10-28 12:04:13,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 10746 transitions. [2020-10-28 12:04:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-28 12:04:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:13,930 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:13,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:04:13,931 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1941437445, now seen corresponding path program 1 times [2020-10-28 12:04:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:13,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412668624] [2020-10-28 12:04:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-28 12:04:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2395 [2020-10-28 12:04:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 12:04:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:16,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:04:16,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:16,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:04:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 12:04:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:17,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:04:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 134 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:04:17,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412668624] [2020-10-28 12:04:17,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:17,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:04:17,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618605120] [2020-10-28 12:04:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:17,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:17,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:17,259 INFO L87 Difference]: Start difference. First operand 8268 states and 10746 transitions. Second operand 6 states. [2020-10-28 12:04:17,917 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:04:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:20,396 INFO L93 Difference]: Finished difference Result 16310 states and 22688 transitions. [2020-10-28 12:04:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:04:20,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 278 [2020-10-28 12:04:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:20,444 INFO L225 Difference]: With dead ends: 16310 [2020-10-28 12:04:20,445 INFO L226 Difference]: Without dead ends: 10171 [2020-10-28 12:04:20,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2020-10-28 12:04:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 10075. [2020-10-28 12:04:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10075 states. [2020-10-28 12:04:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10075 states to 10075 states and 13315 transitions. [2020-10-28 12:04:20,786 INFO L78 Accepts]: Start accepts. Automaton has 10075 states and 13315 transitions. Word has length 278 [2020-10-28 12:04:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:20,787 INFO L481 AbstractCegarLoop]: Abstraction has 10075 states and 13315 transitions. [2020-10-28 12:04:20,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10075 states and 13315 transitions. [2020-10-28 12:04:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-28 12:04:20,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:20,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:20,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:04:20,799 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:20,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2030449628, now seen corresponding path program 1 times [2020-10-28 12:04:20,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:20,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505394373] [2020-10-28 12:04:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 12:04:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-28 12:04:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:23,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:04:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:23,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:04:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:23,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:23,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:23,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:23,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:24,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:04:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 12:04:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:04:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:24,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505394373] [2020-10-28 12:04:24,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:24,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:24,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986036039] [2020-10-28 12:04:24,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:24,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:24,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:24,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:24,287 INFO L87 Difference]: Start difference. First operand 10075 states and 13315 transitions. Second operand 7 states. [2020-10-28 12:04:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:29,738 INFO L93 Difference]: Finished difference Result 22728 states and 30817 transitions. [2020-10-28 12:04:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:29,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-28 12:04:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:29,792 INFO L225 Difference]: With dead ends: 22728 [2020-10-28 12:04:29,792 INFO L226 Difference]: Without dead ends: 13037 [2020-10-28 12:04:29,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13037 states. [2020-10-28 12:04:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13037 to 12627. [2020-10-28 12:04:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12627 states. [2020-10-28 12:04:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12627 states to 12627 states and 16593 transitions. [2020-10-28 12:04:30,158 INFO L78 Accepts]: Start accepts. Automaton has 12627 states and 16593 transitions. Word has length 281 [2020-10-28 12:04:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:30,159 INFO L481 AbstractCegarLoop]: Abstraction has 12627 states and 16593 transitions. [2020-10-28 12:04:30,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12627 states and 16593 transitions. [2020-10-28 12:04:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 12:04:30,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:30,173 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:30,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:04:30,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:30,174 INFO L82 PathProgramCache]: Analyzing trace with hash -676548773, now seen corresponding path program 1 times [2020-10-28 12:04:30,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:30,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315129552] [2020-10-28 12:04:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 12:04:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-28 12:04:32,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-28 12:04:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:04:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:32,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:04:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-28 12:04:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:33,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:33,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:04:33,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:04:33,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:33,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:33,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315129552] [2020-10-28 12:04:33,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:33,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:33,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470684346] [2020-10-28 12:04:33,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:33,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:33,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:33,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:33,797 INFO L87 Difference]: Start difference. First operand 12627 states and 16593 transitions. Second operand 7 states. [2020-10-28 12:04:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:38,469 INFO L93 Difference]: Finished difference Result 26764 states and 35851 transitions. [2020-10-28 12:04:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:38,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 12:04:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:38,514 INFO L225 Difference]: With dead ends: 26764 [2020-10-28 12:04:38,514 INFO L226 Difference]: Without dead ends: 14521 [2020-10-28 12:04:38,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14521 states. [2020-10-28 12:04:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 14509. [2020-10-28 12:04:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14509 states. [2020-10-28 12:04:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14509 states to 14509 states and 18596 transitions. [2020-10-28 12:04:38,875 INFO L78 Accepts]: Start accepts. Automaton has 14509 states and 18596 transitions. Word has length 305 [2020-10-28 12:04:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:38,876 INFO L481 AbstractCegarLoop]: Abstraction has 14509 states and 18596 transitions. [2020-10-28 12:04:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14509 states and 18596 transitions. [2020-10-28 12:04:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 12:04:38,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:38,889 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:38,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:04:38,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1115605102, now seen corresponding path program 1 times [2020-10-28 12:04:38,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854678830] [2020-10-28 12:04:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:04:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:04:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:04:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:44,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-28 12:04:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:04:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:44,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:04:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:44,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 12:04:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 12:04:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854678830] [2020-10-28 12:04:44,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:44,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894134490] [2020-10-28 12:04:44,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:44,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:44,777 INFO L87 Difference]: Start difference. First operand 14509 states and 18596 transitions. Second operand 7 states. [2020-10-28 12:04:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:49,796 INFO L93 Difference]: Finished difference Result 30584 states and 40328 transitions. [2020-10-28 12:04:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:49,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-28 12:04:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:49,861 INFO L225 Difference]: With dead ends: 30584 [2020-10-28 12:04:49,861 INFO L226 Difference]: Without dead ends: 18582 [2020-10-28 12:04:49,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18582 states. [2020-10-28 12:04:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18582 to 17996. [2020-10-28 12:04:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17996 states. [2020-10-28 12:04:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17996 states to 17996 states and 23368 transitions. [2020-10-28 12:04:50,279 INFO L78 Accepts]: Start accepts. Automaton has 17996 states and 23368 transitions. Word has length 309 [2020-10-28 12:04:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:50,280 INFO L481 AbstractCegarLoop]: Abstraction has 17996 states and 23368 transitions. [2020-10-28 12:04:50,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 17996 states and 23368 transitions. [2020-10-28 12:04:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 12:04:50,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:50,299 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:50,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:04:50,299 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1570990578, now seen corresponding path program 1 times [2020-10-28 12:04:50,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:50,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011334514] [2020-10-28 12:04:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4262 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:04:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:54,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:04:54,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:04:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 12:04:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:55,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:04:55,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011334514] [2020-10-28 12:04:55,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:55,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:55,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958063315] [2020-10-28 12:04:55,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:55,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:55,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:55,390 INFO L87 Difference]: Start difference. First operand 17996 states and 23368 transitions. Second operand 7 states. [2020-10-28 12:04:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:58,917 INFO L93 Difference]: Finished difference Result 37306 states and 49595 transitions. [2020-10-28 12:04:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:58,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-28 12:04:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:58,988 INFO L225 Difference]: With dead ends: 37306 [2020-10-28 12:04:58,988 INFO L226 Difference]: Without dead ends: 21651 [2020-10-28 12:04:59,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21651 states. [2020-10-28 12:04:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21651 to 21437. [2020-10-28 12:04:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21437 states. [2020-10-28 12:04:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21437 states to 21437 states and 27591 transitions. [2020-10-28 12:04:59,704 INFO L78 Accepts]: Start accepts. Automaton has 21437 states and 27591 transitions. Word has length 335 [2020-10-28 12:04:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:59,705 INFO L481 AbstractCegarLoop]: Abstraction has 21437 states and 27591 transitions. [2020-10-28 12:04:59,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21437 states and 27591 transitions. [2020-10-28 12:04:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 12:04:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:59,721 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:59,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:04:59,722 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash -739984674, now seen corresponding path program 1 times [2020-10-28 12:04:59,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:59,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303370975] [2020-10-28 12:04:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:05:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:05:04,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:05:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:05,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:05:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 12:05:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:05:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 191 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 12:05:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303370975] [2020-10-28 12:05:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:05,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529050426] [2020-10-28 12:05:05,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:05,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:05,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:05,605 INFO L87 Difference]: Start difference. First operand 21437 states and 27591 transitions. Second operand 7 states. [2020-10-28 12:05:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:09,616 INFO L93 Difference]: Finished difference Result 43607 states and 55987 transitions. [2020-10-28 12:05:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:09,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-28 12:05:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:09,684 INFO L225 Difference]: With dead ends: 43607 [2020-10-28 12:05:09,684 INFO L226 Difference]: Without dead ends: 24297 [2020-10-28 12:05:09,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24297 states. [2020-10-28 12:05:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24297 to 23707. [2020-10-28 12:05:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23707 states. [2020-10-28 12:05:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23707 states to 23707 states and 29983 transitions. [2020-10-28 12:05:10,257 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 29983 transitions. Word has length 340 [2020-10-28 12:05:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:10,258 INFO L481 AbstractCegarLoop]: Abstraction has 23707 states and 29983 transitions. [2020-10-28 12:05:10,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 29983 transitions. [2020-10-28 12:05:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 12:05:10,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:10,277 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:10,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:05:10,277 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:10,278 INFO L82 PathProgramCache]: Analyzing trace with hash 494619546, now seen corresponding path program 1 times [2020-10-28 12:05:10,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:10,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468705622] [2020-10-28 12:05:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 12:05:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:05:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:05:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:15,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:15,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:15,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:15,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:05:15,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:05:15,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:15,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:05:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:05:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:05:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-28 12:05:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:16,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:16,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:16,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 191 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 12:05:16,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468705622] [2020-10-28 12:05:16,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:16,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:16,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792650092] [2020-10-28 12:05:16,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:16,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:16,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:16,217 INFO L87 Difference]: Start difference. First operand 23707 states and 29983 transitions. Second operand 7 states. [2020-10-28 12:05:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:20,479 INFO L93 Difference]: Finished difference Result 47614 states and 60613 transitions. [2020-10-28 12:05:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:20,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-28 12:05:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:20,552 INFO L225 Difference]: With dead ends: 47614 [2020-10-28 12:05:20,552 INFO L226 Difference]: Without dead ends: 25640 [2020-10-28 12:05:20,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25640 states. [2020-10-28 12:05:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25640 to 23709. [2020-10-28 12:05:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23709 states. [2020-10-28 12:05:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23709 states to 23709 states and 29660 transitions. [2020-10-28 12:05:21,073 INFO L78 Accepts]: Start accepts. Automaton has 23709 states and 29660 transitions. Word has length 361 [2020-10-28 12:05:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:21,074 INFO L481 AbstractCegarLoop]: Abstraction has 23709 states and 29660 transitions. [2020-10-28 12:05:21,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 23709 states and 29660 transitions. [2020-10-28 12:05:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 12:05:21,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:21,089 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:21,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:05:21,089 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2007040042, now seen corresponding path program 1 times [2020-10-28 12:05:21,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:21,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83879007] [2020-10-28 12:05:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:26,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 12:05:26,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 12:05:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 12:05:26,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:26,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:26,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:26,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:05:26,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:26,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:05:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 12:05:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:26,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 12:05:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-28 12:05:26,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83879007] [2020-10-28 12:05:26,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:26,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:26,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758509251] [2020-10-28 12:05:26,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:26,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:26,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:26,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:26,825 INFO L87 Difference]: Start difference. First operand 23709 states and 29660 transitions. Second operand 5 states. [2020-10-28 12:05:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:29,583 INFO L93 Difference]: Finished difference Result 44627 states and 55893 transitions. [2020-10-28 12:05:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:29,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-28 12:05:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:29,624 INFO L225 Difference]: With dead ends: 44627 [2020-10-28 12:05:29,624 INFO L226 Difference]: Without dead ends: 21111 [2020-10-28 12:05:29,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21111 states. [2020-10-28 12:05:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21111 to 19375. [2020-10-28 12:05:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19375 states. [2020-10-28 12:05:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19375 states to 19375 states and 23012 transitions. [2020-10-28 12:05:30,018 INFO L78 Accepts]: Start accepts. Automaton has 19375 states and 23012 transitions. Word has length 361 [2020-10-28 12:05:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:30,019 INFO L481 AbstractCegarLoop]: Abstraction has 19375 states and 23012 transitions. [2020-10-28 12:05:30,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 19375 states and 23012 transitions. [2020-10-28 12:05:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-28 12:05:30,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:30,030 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:30,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:05:30,031 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:30,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash -226160277, now seen corresponding path program 1 times [2020-10-28 12:05:30,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:30,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455846569] [2020-10-28 12:05:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:31,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 12:05:31,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:05:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:31,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:31,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:31,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:31,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:31,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:31,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:05:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:05:32,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:05:32,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:05:32,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455846569] [2020-10-28 12:05:32,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:32,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:05:32,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645202137] [2020-10-28 12:05:32,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:05:32,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:32,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:05:32,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:05:32,728 INFO L87 Difference]: Start difference. First operand 19375 states and 23012 transitions. Second operand 8 states. [2020-10-28 12:05:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:37,503 INFO L93 Difference]: Finished difference Result 36848 states and 44089 transitions. [2020-10-28 12:05:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:37,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2020-10-28 12:05:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:37,563 INFO L225 Difference]: With dead ends: 36848 [2020-10-28 12:05:37,563 INFO L226 Difference]: Without dead ends: 20367 [2020-10-28 12:05:37,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:05:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20367 states. [2020-10-28 12:05:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20367 to 20329. [2020-10-28 12:05:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20329 states. [2020-10-28 12:05:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20329 states to 20329 states and 24141 transitions. [2020-10-28 12:05:37,943 INFO L78 Accepts]: Start accepts. Automaton has 20329 states and 24141 transitions. Word has length 362 [2020-10-28 12:05:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:37,944 INFO L481 AbstractCegarLoop]: Abstraction has 20329 states and 24141 transitions. [2020-10-28 12:05:37,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:05:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20329 states and 24141 transitions. [2020-10-28 12:05:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 12:05:37,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:37,953 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, 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, 3, 3, 3, 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] [2020-10-28 12:05:37,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:05:37,954 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1769682734, now seen corresponding path program 1 times [2020-10-28 12:05:37,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:37,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920176130] [2020-10-28 12:05:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-28 12:05:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2326 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:05:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:05:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:05:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 12:05:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:40,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:40,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 12:05:41,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920176130] [2020-10-28 12:05:41,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:41,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:41,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96621638] [2020-10-28 12:05:41,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:41,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:41,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:41,251 INFO L87 Difference]: Start difference. First operand 20329 states and 24141 transitions. Second operand 7 states. [2020-10-28 12:05:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:45,306 INFO L93 Difference]: Finished difference Result 37976 states and 45175 transitions. [2020-10-28 12:05:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:05:45,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-28 12:05:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:45,345 INFO L225 Difference]: With dead ends: 37976 [2020-10-28 12:05:45,346 INFO L226 Difference]: Without dead ends: 20157 [2020-10-28 12:05:45,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20157 states. [2020-10-28 12:05:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20157 to 20129. [2020-10-28 12:05:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20129 states. [2020-10-28 12:05:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20129 states to 20129 states and 23737 transitions. [2020-10-28 12:05:45,737 INFO L78 Accepts]: Start accepts. Automaton has 20129 states and 23737 transitions. Word has length 372 [2020-10-28 12:05:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:45,737 INFO L481 AbstractCegarLoop]: Abstraction has 20129 states and 23737 transitions. [2020-10-28 12:05:45,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20129 states and 23737 transitions. [2020-10-28 12:05:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-28 12:05:45,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:45,751 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:45,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:05:45,751 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash -874087137, now seen corresponding path program 1 times [2020-10-28 12:05:45,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:45,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493686316] [2020-10-28 12:05:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-28 12:05:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-28 12:05:47,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:47,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:05:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:47,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:48,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:05:48,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493686316] [2020-10-28 12:05:48,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:48,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:48,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231273477] [2020-10-28 12:05:48,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:48,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:48,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:48,671 INFO L87 Difference]: Start difference. First operand 20129 states and 23737 transitions. Second operand 7 states. [2020-10-28 12:05:50,130 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 12:05:50,517 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:05:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:52,700 INFO L93 Difference]: Finished difference Result 37582 states and 44452 transitions. [2020-10-28 12:05:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:05:52,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-28 12:05:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:52,736 INFO L225 Difference]: With dead ends: 37582 [2020-10-28 12:05:52,736 INFO L226 Difference]: Without dead ends: 20349 [2020-10-28 12:05:52,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2020-10-28 12:05:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 20317. [2020-10-28 12:05:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20317 states. [2020-10-28 12:05:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20317 states to 20317 states and 23947 transitions. [2020-10-28 12:05:53,076 INFO L78 Accepts]: Start accepts. Automaton has 20317 states and 23947 transitions. Word has length 397 [2020-10-28 12:05:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:53,077 INFO L481 AbstractCegarLoop]: Abstraction has 20317 states and 23947 transitions. [2020-10-28 12:05:53,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 20317 states and 23947 transitions. [2020-10-28 12:05:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-28 12:05:53,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:53,098 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, 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, 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] [2020-10-28 12:05:53,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:05:53,098 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:53,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2035409570, now seen corresponding path program 1 times [2020-10-28 12:05:53,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:53,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535700482] [2020-10-28 12:05:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-28 12:05:58,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:05:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:05:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:05:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:05:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-28 12:05:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:05:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:58,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 318 proven. 79 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-28 12:05:59,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535700482] [2020-10-28 12:05:59,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:59,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:59,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609462985] [2020-10-28 12:05:59,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:59,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:59,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:59,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:59,055 INFO L87 Difference]: Start difference. First operand 20317 states and 23947 transitions. Second operand 7 states. [2020-10-28 12:06:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:02,854 INFO L93 Difference]: Finished difference Result 38933 states and 45911 transitions. [2020-10-28 12:06:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:02,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-28 12:06:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:02,897 INFO L225 Difference]: With dead ends: 38933 [2020-10-28 12:06:02,897 INFO L226 Difference]: Without dead ends: 21120 [2020-10-28 12:06:02,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2020-10-28 12:06:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 19575. [2020-10-28 12:06:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19575 states. [2020-10-28 12:06:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19575 states to 19575 states and 23023 transitions. [2020-10-28 12:06:03,238 INFO L78 Accepts]: Start accepts. Automaton has 19575 states and 23023 transitions. Word has length 419 [2020-10-28 12:06:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:03,239 INFO L481 AbstractCegarLoop]: Abstraction has 19575 states and 23023 transitions. [2020-10-28 12:06:03,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 19575 states and 23023 transitions. [2020-10-28 12:06:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-28 12:06:03,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:03,247 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:03,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:06:03,248 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:03,248 INFO L82 PathProgramCache]: Analyzing trace with hash -317570682, now seen corresponding path program 1 times [2020-10-28 12:06:03,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:03,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876612212] [2020-10-28 12:06:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:04,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-28 12:06:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-28 12:06:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:04,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:06:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:06:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:04,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:06:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:06:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:05,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:06:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:06:05,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876612212] [2020-10-28 12:06:05,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:05,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:05,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143978491] [2020-10-28 12:06:05,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:05,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:05,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:05,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:05,658 INFO L87 Difference]: Start difference. First operand 19575 states and 23023 transitions. Second operand 7 states. [2020-10-28 12:06:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:09,544 INFO L93 Difference]: Finished difference Result 35906 states and 42361 transitions. [2020-10-28 12:06:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:09,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-28 12:06:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:09,579 INFO L225 Difference]: With dead ends: 35906 [2020-10-28 12:06:09,579 INFO L226 Difference]: Without dead ends: 19611 [2020-10-28 12:06:09,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19611 states. [2020-10-28 12:06:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19611 to 19575. [2020-10-28 12:06:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19575 states. [2020-10-28 12:06:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19575 states to 19575 states and 23015 transitions. [2020-10-28 12:06:09,876 INFO L78 Accepts]: Start accepts. Automaton has 19575 states and 23015 transitions. Word has length 419 [2020-10-28 12:06:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:09,876 INFO L481 AbstractCegarLoop]: Abstraction has 19575 states and 23015 transitions. [2020-10-28 12:06:09,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19575 states and 23015 transitions. [2020-10-28 12:06:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-28 12:06:09,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:09,886 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:09,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:06:09,886 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1068354061, now seen corresponding path program 1 times [2020-10-28 12:06:09,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:09,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406043240] [2020-10-28 12:06:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-28 12:06:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1446 [2020-10-28 12:06:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-28 12:06:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:06:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:06:11,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 12:06:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-28 12:06:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 220 proven. 33 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 12:06:12,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406043240] [2020-10-28 12:06:12,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:12,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:06:12,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2271135] [2020-10-28 12:06:12,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:06:12,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:06:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:12,099 INFO L87 Difference]: Start difference. First operand 19575 states and 23015 transitions. Second operand 6 states. [2020-10-28 12:06:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:15,796 INFO L93 Difference]: Finished difference Result 38194 states and 45103 transitions. [2020-10-28 12:06:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:06:15,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 426 [2020-10-28 12:06:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:15,834 INFO L225 Difference]: With dead ends: 38194 [2020-10-28 12:06:15,834 INFO L226 Difference]: Without dead ends: 21709 [2020-10-28 12:06:15,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:06:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21709 states. [2020-10-28 12:06:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21709 to 19972. [2020-10-28 12:06:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19972 states. [2020-10-28 12:06:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19972 states to 19972 states and 23509 transitions. [2020-10-28 12:06:16,114 INFO L78 Accepts]: Start accepts. Automaton has 19972 states and 23509 transitions. Word has length 426 [2020-10-28 12:06:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:16,115 INFO L481 AbstractCegarLoop]: Abstraction has 19972 states and 23509 transitions. [2020-10-28 12:06:16,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:06:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19972 states and 23509 transitions. [2020-10-28 12:06:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-28 12:06:16,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:16,127 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:16,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:06:16,127 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -344707906, now seen corresponding path program 1 times [2020-10-28 12:06:16,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:16,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034365044] [2020-10-28 12:06:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4018 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:06:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:06:20,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:20,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:20,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:20,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:06:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:06:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:06:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-28 12:06:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:06:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 323 proven. 79 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-28 12:06:21,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034365044] [2020-10-28 12:06:21,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:21,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:21,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109772147] [2020-10-28 12:06:21,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:21,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:21,162 INFO L87 Difference]: Start difference. First operand 19972 states and 23509 transitions. Second operand 7 states. [2020-10-28 12:06:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:25,342 INFO L93 Difference]: Finished difference Result 37279 states and 44033 transitions. [2020-10-28 12:06:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:25,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2020-10-28 12:06:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:25,396 INFO L225 Difference]: With dead ends: 37279 [2020-10-28 12:06:25,396 INFO L226 Difference]: Without dead ends: 20207 [2020-10-28 12:06:25,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20207 states. [2020-10-28 12:06:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20207 to 20162. [2020-10-28 12:06:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20162 states. [2020-10-28 12:06:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20162 states to 20162 states and 23537 transitions. [2020-10-28 12:06:25,716 INFO L78 Accepts]: Start accepts. Automaton has 20162 states and 23537 transitions. Word has length 441 [2020-10-28 12:06:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:25,716 INFO L481 AbstractCegarLoop]: Abstraction has 20162 states and 23537 transitions. [2020-10-28 12:06:25,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 20162 states and 23537 transitions. [2020-10-28 12:06:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-28 12:06:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:25,726 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:25,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:06:25,726 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1755612555, now seen corresponding path program 1 times [2020-10-28 12:06:25,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:25,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123479974] [2020-10-28 12:06:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:30,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:30,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:30,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-28 12:06:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-28 12:06:30,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:31,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:31,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:06:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:06:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:06:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:06:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:06:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:31,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:06:31,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 250 proven. 4 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 12:06:32,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123479974] [2020-10-28 12:06:32,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:32,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:06:32,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065267404] [2020-10-28 12:06:32,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:06:32,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:06:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:06:32,180 INFO L87 Difference]: Start difference. First operand 20162 states and 23537 transitions. Second operand 8 states. [2020-10-28 12:06:38,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:38,261 INFO L93 Difference]: Finished difference Result 40004 states and 46726 transitions. [2020-10-28 12:06:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:06:38,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 450 [2020-10-28 12:06:38,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:38,298 INFO L225 Difference]: With dead ends: 40004 [2020-10-28 12:06:38,298 INFO L226 Difference]: Without dead ends: 20036 [2020-10-28 12:06:38,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:06:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2020-10-28 12:06:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 19384. [2020-10-28 12:06:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19384 states. [2020-10-28 12:06:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19384 states to 19384 states and 22189 transitions. [2020-10-28 12:06:38,740 INFO L78 Accepts]: Start accepts. Automaton has 19384 states and 22189 transitions. Word has length 450 [2020-10-28 12:06:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:38,741 INFO L481 AbstractCegarLoop]: Abstraction has 19384 states and 22189 transitions. [2020-10-28 12:06:38,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:06:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 19384 states and 22189 transitions. [2020-10-28 12:06:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-28 12:06:38,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:38,750 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:38,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:06:38,751 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -397488445, now seen corresponding path program 1 times [2020-10-28 12:06:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:38,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834266770] [2020-10-28 12:06:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:43,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 428 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 12:06:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:06:44,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:06:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:44,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-28 12:06:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-28 12:06:44,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834266770] [2020-10-28 12:06:44,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:44,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:44,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367499597] [2020-10-28 12:06:44,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:44,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:44,330 INFO L87 Difference]: Start difference. First operand 19384 states and 22189 transitions. Second operand 5 states. [2020-10-28 12:06:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:47,696 INFO L93 Difference]: Finished difference Result 36851 states and 42353 transitions. [2020-10-28 12:06:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:47,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 454 [2020-10-28 12:06:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:47,699 INFO L225 Difference]: With dead ends: 36851 [2020-10-28 12:06:47,699 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 12:06:47,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 12:06:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 12:06:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 12:06:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 12:06:47,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 454 [2020-10-28 12:06:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:47,724 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 12:06:47,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 12:06:47,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 12:06:47,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:06:47,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 12:06:48,249 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104