/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:43:21,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:43:21,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:43:21,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:43:21,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:43:21,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:43:21,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:43:21,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:43:21,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:43:21,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:43:21,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:43:21,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:43:21,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:43:21,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:43:21,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:43:21,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:43:21,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:43:21,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:43:21,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:43:21,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:43:21,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:43:21,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:43:21,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:43:21,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:43:21,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:43:21,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:43:21,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:43:21,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:43:21,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:43:21,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:43:21,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:43:21,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:43:21,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:43:21,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:43:21,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:43:21,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:43:21,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:43:21,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:43:21,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:43:21,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:43:21,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:43:21,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:43:21,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:43:21,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:43:21,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:43:21,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:43:21,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:43:21,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:43:21,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:43:21,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:43:21,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:43:21,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:43:21,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:43:21,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:43:21,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:43:21,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:43:21,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:43:21,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:43:21,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:43:21,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:43:21,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:43:21,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:43:21,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:43:21,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:21,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:43:21,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:43:21,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:43:21,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:43:21,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:43:21,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:43:21,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:43:21,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:43:22,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:43:22,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:43:22,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:43:22,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:43:22,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:43:22,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-29 07:43:22,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91be249e0/288ab8b516594391af8166f289b3e763/FLAGb5a364b11 [2020-10-29 07:43:23,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:43:23,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-29 07:43:23,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91be249e0/288ab8b516594391af8166f289b3e763/FLAGb5a364b11 [2020-10-29 07:43:23,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91be249e0/288ab8b516594391af8166f289b3e763 [2020-10-29 07:43:23,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:43:23,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:43:23,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:23,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:43:23,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:43:23,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:23" (1/1) ... [2020-10-29 07:43:23,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51464909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:23, skipping insertion in model container [2020-10-29 07:43:23,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:23" (1/1) ... [2020-10-29 07:43:23,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:43:23,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:43:25,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:25,033 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:43:25,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:25,399 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:43:25,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25 WrapperNode [2020-10-29 07:43:25,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:25,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:43:25,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:43:25,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:43:25,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... [2020-10-29 07:43:25,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:43:25,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:43:25,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:43:25,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:43:25,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:43:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:43:25,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:43:25,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:43:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:43:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:43:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:43:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:43:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:43:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:43:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:43:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:43:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:43:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:43:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:43:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:43:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:43:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:43:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:43:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:43:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:43:30,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:43:30,005 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:43:30,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:30 BoogieIcfgContainer [2020-10-29 07:43:30,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:43:30,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:43:30,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:43:30,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:43:30,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:43:23" (1/3) ... [2020-10-29 07:43:30,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176d5b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:30, skipping insertion in model container [2020-10-29 07:43:30,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:25" (2/3) ... [2020-10-29 07:43:30,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176d5b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:30, skipping insertion in model container [2020-10-29 07:43:30,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:30" (3/3) ... [2020-10-29 07:43:30,028 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-29 07:43:30,046 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:43:30,055 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:43:30,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:43:30,134 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:43:30,135 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:43:30,135 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:43:30,135 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:43:30,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:43:30,135 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:43:30,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:43:30,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:43:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:43:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 07:43:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:30,204 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] [2020-10-29 07:43:30,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:30,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1871102583, now seen corresponding path program 1 times [2020-10-29 07:43:30,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:30,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636264501] [2020-10-29 07:43:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:31,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:31,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 07:43:31,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-29 07:43:31,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:31,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 07:43:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:43:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:31,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:31,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636264501] [2020-10-29 07:43:31,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:31,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:43:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514685107] [2020-10-29 07:43:31,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:43:31,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:31,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:43:31,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:43:31,390 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:43:37,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:37,673 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-29 07:43:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:43:37,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 07:43:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:37,697 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 07:43:37,697 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 07:43:37,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:43:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 07:43:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-29 07:43:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-29 07:43:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-29 07:43:37,827 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 22 [2020-10-29 07:43:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:37,830 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-29 07:43:37,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:43:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-29 07:43:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 07:43:37,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:37,840 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:43:37,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:43:37,841 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 137838371, now seen corresponding path program 1 times [2020-10-29 07:43:37,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:37,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314468244] [2020-10-29 07:43:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:43:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1519 [2020-10-29 07:43:39,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:43:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:43:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:43:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:39,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:43:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:43:39,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:43:39,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:43:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:40,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314468244] [2020-10-29 07:43:40,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:40,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:43:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509984482] [2020-10-29 07:43:40,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:40,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:40,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:40,039 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-29 07:43:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:47,231 INFO L93 Difference]: Finished difference Result 2057 states and 3021 transitions. [2020-10-29 07:43:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:47,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-29 07:43:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:47,249 INFO L225 Difference]: With dead ends: 2057 [2020-10-29 07:43:47,250 INFO L226 Difference]: Without dead ends: 1366 [2020-10-29 07:43:47,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-29 07:43:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1338. [2020-10-29 07:43:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-29 07:43:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-29 07:43:47,357 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 101 [2020-10-29 07:43:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:47,358 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-29 07:43:47,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-29 07:43:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 07:43:47,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:47,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:47,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:43:47,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2004092959, now seen corresponding path program 1 times [2020-10-29 07:43:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:47,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901659319] [2020-10-29 07:43:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 07:43:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:43:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:50,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:50,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:51,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:43:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:43:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:51,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901659319] [2020-10-29 07:43:51,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:51,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:43:51,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781762082] [2020-10-29 07:43:51,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:43:51,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:51,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:43:51,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:43:51,629 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 8 states. [2020-10-29 07:43:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:59,705 INFO L93 Difference]: Finished difference Result 3010 states and 3818 transitions. [2020-10-29 07:43:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:43:59,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-29 07:43:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:59,717 INFO L225 Difference]: With dead ends: 3010 [2020-10-29 07:43:59,717 INFO L226 Difference]: Without dead ends: 1678 [2020-10-29 07:43:59,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:43:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-10-29 07:43:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1651. [2020-10-29 07:43:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-10-29 07:43:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2053 transitions. [2020-10-29 07:43:59,779 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2053 transitions. Word has length 222 [2020-10-29 07:43:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:59,780 INFO L481 AbstractCegarLoop]: Abstraction has 1651 states and 2053 transitions. [2020-10-29 07:43:59,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:43:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2053 transitions. [2020-10-29 07:43:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 07:43:59,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:59,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:59,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:43:59,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash -364225162, now seen corresponding path program 1 times [2020-10-29 07:43:59,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:59,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055718634] [2020-10-29 07:43:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-29 07:44:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:44:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:44:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:44:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:44:02,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055718634] [2020-10-29 07:44:02,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:02,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:44:02,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418456994] [2020-10-29 07:44:02,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:44:02,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:44:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:44:02,858 INFO L87 Difference]: Start difference. First operand 1651 states and 2053 transitions. Second operand 6 states. [2020-10-29 07:44:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:09,574 INFO L93 Difference]: Finished difference Result 3961 states and 5102 transitions. [2020-10-29 07:44:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:44:09,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 296 [2020-10-29 07:44:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:09,589 INFO L225 Difference]: With dead ends: 3961 [2020-10-29 07:44:09,589 INFO L226 Difference]: Without dead ends: 2623 [2020-10-29 07:44:09,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2020-10-29 07:44:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2604. [2020-10-29 07:44:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-10-29 07:44:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3146 transitions. [2020-10-29 07:44:09,678 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3146 transitions. Word has length 296 [2020-10-29 07:44:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:09,680 INFO L481 AbstractCegarLoop]: Abstraction has 2604 states and 3146 transitions. [2020-10-29 07:44:09,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:44:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3146 transitions. [2020-10-29 07:44:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 07:44:09,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:09,686 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:09,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:44:09,686 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:09,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:09,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1421473682, now seen corresponding path program 1 times [2020-10-29 07:44:09,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:09,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326970351] [2020-10-29 07:44:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 07:44:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 322 [2020-10-29 07:44:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:44:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:44:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-29 07:44:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:16,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:44:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:44:16,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326970351] [2020-10-29 07:44:16,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:16,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:16,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209993818] [2020-10-29 07:44:16,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:16,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:16,416 INFO L87 Difference]: Start difference. First operand 2604 states and 3146 transitions. Second operand 7 states. [2020-10-29 07:44:16,592 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:44:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:33,980 INFO L93 Difference]: Finished difference Result 7074 states and 8966 transitions. [2020-10-29 07:44:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:44:33,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-29 07:44:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:34,012 INFO L225 Difference]: With dead ends: 7074 [2020-10-29 07:44:34,012 INFO L226 Difference]: Without dead ends: 4783 [2020-10-29 07:44:34,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:44:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2020-10-29 07:44:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 3852. [2020-10-29 07:44:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3852 states. [2020-10-29 07:44:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 4855 transitions. [2020-10-29 07:44:34,191 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 4855 transitions. Word has length 317 [2020-10-29 07:44:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:34,192 INFO L481 AbstractCegarLoop]: Abstraction has 3852 states and 4855 transitions. [2020-10-29 07:44:34,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 4855 transitions. [2020-10-29 07:44:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 07:44:34,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:34,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:34,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:44:34,204 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1338662344, now seen corresponding path program 1 times [2020-10-29 07:44:34,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:34,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624178954] [2020-10-29 07:44:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:37,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-29 07:44:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3026 [2020-10-29 07:44:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:44:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:44:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:37,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:37,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:37,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:44:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:44:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:38,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:44:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:44:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:38,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:44:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:44:38,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624178954] [2020-10-29 07:44:38,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:38,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:38,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507145442] [2020-10-29 07:44:38,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:38,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:38,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:38,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:38,652 INFO L87 Difference]: Start difference. First operand 3852 states and 4855 transitions. Second operand 7 states. [2020-10-29 07:44:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:53,323 INFO L93 Difference]: Finished difference Result 9990 states and 13075 transitions. [2020-10-29 07:44:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:53,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-29 07:44:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:53,365 INFO L225 Difference]: With dead ends: 9990 [2020-10-29 07:44:53,365 INFO L226 Difference]: Without dead ends: 6451 [2020-10-29 07:44:53,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2020-10-29 07:44:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5467. [2020-10-29 07:44:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5467 states. [2020-10-29 07:44:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 6695 transitions. [2020-10-29 07:44:53,590 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 6695 transitions. Word has length 406 [2020-10-29 07:44:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:53,592 INFO L481 AbstractCegarLoop]: Abstraction has 5467 states and 6695 transitions. [2020-10-29 07:44:53,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 6695 transitions. [2020-10-29 07:44:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-29 07:44:53,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:53,605 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2020-10-29 07:44:53,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:44:53,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:53,606 INFO L82 PathProgramCache]: Analyzing trace with hash 787286868, now seen corresponding path program 1 times [2020-10-29 07:44:53,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:53,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084878931] [2020-10-29 07:44:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:58,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:58,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-29 07:44:58,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:44:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 07:44:58,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:58,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:44:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:44:58,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:59,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:59,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:44:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-29 07:44:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:44:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:45:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:45:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:45:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 226 proven. 109 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:45:00,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084878931] [2020-10-29 07:45:00,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:00,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:45:00,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749620708] [2020-10-29 07:45:00,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:00,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:00,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:00,477 INFO L87 Difference]: Start difference. First operand 5467 states and 6695 transitions. Second operand 8 states. [2020-10-29 07:45:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:18,222 INFO L93 Difference]: Finished difference Result 13555 states and 17503 transitions. [2020-10-29 07:45:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:18,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 427 [2020-10-29 07:45:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:18,268 INFO L225 Difference]: With dead ends: 13555 [2020-10-29 07:45:18,269 INFO L226 Difference]: Without dead ends: 7755 [2020-10-29 07:45:18,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:45:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7755 states. [2020-10-29 07:45:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7755 to 7062. [2020-10-29 07:45:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2020-10-29 07:45:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 8301 transitions. [2020-10-29 07:45:18,594 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 8301 transitions. Word has length 427 [2020-10-29 07:45:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:18,594 INFO L481 AbstractCegarLoop]: Abstraction has 7062 states and 8301 transitions. [2020-10-29 07:45:18,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 8301 transitions. [2020-10-29 07:45:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-29 07:45:18,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:18,611 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:18,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:45:18,611 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash 219544841, now seen corresponding path program 1 times [2020-10-29 07:45:18,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:18,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091261078] [2020-10-29 07:45:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:45:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:45:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:24,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:45:24,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:45:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:45:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:45:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:45:24,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:45:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:45:25,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091261078] [2020-10-29 07:45:25,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:25,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:25,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075815829] [2020-10-29 07:45:25,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:25,172 INFO L87 Difference]: Start difference. First operand 7062 states and 8301 transitions. Second operand 7 states. [2020-10-29 07:45:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:33,840 INFO L93 Difference]: Finished difference Result 13896 states and 16479 transitions. [2020-10-29 07:45:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:45:33,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 489 [2020-10-29 07:45:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:33,869 INFO L225 Difference]: With dead ends: 13896 [2020-10-29 07:45:33,869 INFO L226 Difference]: Without dead ends: 7147 [2020-10-29 07:45:33,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2020-10-29 07:45:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 6765. [2020-10-29 07:45:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-29 07:45:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 7621 transitions. [2020-10-29 07:45:34,056 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 7621 transitions. Word has length 489 [2020-10-29 07:45:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:34,057 INFO L481 AbstractCegarLoop]: Abstraction has 6765 states and 7621 transitions. [2020-10-29 07:45:34,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 7621 transitions. [2020-10-29 07:45:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-29 07:45:34,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:34,066 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:34,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:45:34,066 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash 541857418, now seen corresponding path program 1 times [2020-10-29 07:45:34,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:34,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659681145] [2020-10-29 07:45:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:45:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:45:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:45:39,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:45:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:45:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:45:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:40,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:40,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:45:40,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 07:45:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:40,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:45:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:45:40,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659681145] [2020-10-29 07:45:40,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:40,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:40,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376097838] [2020-10-29 07:45:40,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:40,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:40,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:40,355 INFO L87 Difference]: Start difference. First operand 6765 states and 7621 transitions. Second operand 7 states. [2020-10-29 07:45:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:51,138 INFO L93 Difference]: Finished difference Result 16413 states and 18963 transitions. [2020-10-29 07:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:45:51,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-29 07:45:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:51,171 INFO L225 Difference]: With dead ends: 16413 [2020-10-29 07:45:51,172 INFO L226 Difference]: Without dead ends: 9630 [2020-10-29 07:45:51,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2020-10-29 07:45:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 8659. [2020-10-29 07:45:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8659 states. [2020-10-29 07:45:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8659 states to 8659 states and 9707 transitions. [2020-10-29 07:45:51,408 INFO L78 Accepts]: Start accepts. Automaton has 8659 states and 9707 transitions. Word has length 501 [2020-10-29 07:45:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:51,409 INFO L481 AbstractCegarLoop]: Abstraction has 8659 states and 9707 transitions. [2020-10-29 07:45:51,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8659 states and 9707 transitions. [2020-10-29 07:45:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-29 07:45:51,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:51,420 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:51,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:45:51,420 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 554206449, now seen corresponding path program 1 times [2020-10-29 07:45:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:51,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534549084] [2020-10-29 07:45:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:45:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:45:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:56,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:45:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:56,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:57,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 07:45:57,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:57,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:45:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:45:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:45:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:45:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:45:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:57,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:45:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-29 07:45:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:57,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:45:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 172 proven. 151 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-29 07:45:58,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534549084] [2020-10-29 07:45:58,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:58,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154457592] [2020-10-29 07:45:58,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:58,285 INFO L87 Difference]: Start difference. First operand 8659 states and 9707 transitions. Second operand 7 states. [2020-10-29 07:46:02,178 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:46:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:10,694 INFO L93 Difference]: Finished difference Result 18945 states and 21263 transitions. [2020-10-29 07:46:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:10,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-29 07:46:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:10,733 INFO L225 Difference]: With dead ends: 18945 [2020-10-29 07:46:10,734 INFO L226 Difference]: Without dead ends: 10599 [2020-10-29 07:46:10,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:46:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10599 states. [2020-10-29 07:46:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10599 to 10228. [2020-10-29 07:46:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10228 states. [2020-10-29 07:46:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 11374 transitions. [2020-10-29 07:46:11,006 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 11374 transitions. Word has length 562 [2020-10-29 07:46:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:11,007 INFO L481 AbstractCegarLoop]: Abstraction has 10228 states and 11374 transitions. [2020-10-29 07:46:11,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 11374 transitions. [2020-10-29 07:46:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-29 07:46:11,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:11,021 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:11,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:46:11,022 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1081222777, now seen corresponding path program 1 times [2020-10-29 07:46:11,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:11,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993831267] [2020-10-29 07:46:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 480 [2020-10-29 07:46:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:46:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:46:16,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:46:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:46:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-29 07:46:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:46:16,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:46:16,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:46:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-29 07:46:17,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993831267] [2020-10-29 07:46:17,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:17,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:17,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575600928] [2020-10-29 07:46:17,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:17,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:17,284 INFO L87 Difference]: Start difference. First operand 10228 states and 11374 transitions. Second operand 7 states. [2020-10-29 07:46:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:27,542 INFO L93 Difference]: Finished difference Result 21731 states and 24310 transitions. [2020-10-29 07:46:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:27,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 574 [2020-10-29 07:46:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:27,588 INFO L225 Difference]: With dead ends: 21731 [2020-10-29 07:46:27,589 INFO L226 Difference]: Without dead ends: 10874 [2020-10-29 07:46:27,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2020-10-29 07:46:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 9900. [2020-10-29 07:46:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9900 states. [2020-10-29 07:46:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9900 states to 9900 states and 10833 transitions. [2020-10-29 07:46:27,873 INFO L78 Accepts]: Start accepts. Automaton has 9900 states and 10833 transitions. Word has length 574 [2020-10-29 07:46:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:27,874 INFO L481 AbstractCegarLoop]: Abstraction has 9900 states and 10833 transitions. [2020-10-29 07:46:27,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9900 states and 10833 transitions. [2020-10-29 07:46:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 07:46:27,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:27,887 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:27,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:46:27,887 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash -374568384, now seen corresponding path program 1 times [2020-10-29 07:46:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:27,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870669674] [2020-10-29 07:46:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:30,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:46:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:30,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:30,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:46:30,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:30,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:30,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:31,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:46:31,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:46:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:46:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:46:31,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870669674] [2020-10-29 07:46:31,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:31,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:31,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70120449] [2020-10-29 07:46:31,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:31,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:31,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:31,588 INFO L87 Difference]: Start difference. First operand 9900 states and 10833 transitions. Second operand 7 states. [2020-10-29 07:46:36,568 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:46:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:46,781 INFO L93 Difference]: Finished difference Result 21997 states and 24504 transitions. [2020-10-29 07:46:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:46,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 573 [2020-10-29 07:46:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:46,826 INFO L225 Difference]: With dead ends: 21997 [2020-10-29 07:46:46,826 INFO L226 Difference]: Without dead ends: 12410 [2020-10-29 07:46:46,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12410 states. [2020-10-29 07:46:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12410 to 10209. [2020-10-29 07:46:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10209 states. [2020-10-29 07:46:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10209 states to 10209 states and 11370 transitions. [2020-10-29 07:46:47,097 INFO L78 Accepts]: Start accepts. Automaton has 10209 states and 11370 transitions. Word has length 573 [2020-10-29 07:46:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:47,098 INFO L481 AbstractCegarLoop]: Abstraction has 10209 states and 11370 transitions. [2020-10-29 07:46:47,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10209 states and 11370 transitions. [2020-10-29 07:46:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-29 07:46:47,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:47,111 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:47,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:46:47,112 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash -35912766, now seen corresponding path program 1 times [2020-10-29 07:46:47,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:47,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748408119] [2020-10-29 07:46:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-29 07:46:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2089 [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:46:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:46:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:50,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:46:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:50,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:46:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-29 07:46:50,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748408119] [2020-10-29 07:46:50,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:50,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:50,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618169234] [2020-10-29 07:46:50,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:50,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:50,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:50,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:50,548 INFO L87 Difference]: Start difference. First operand 10209 states and 11370 transitions. Second operand 7 states. [2020-10-29 07:46:50,745 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63