/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/Problem03_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:55:23,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:55:23,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:55:23,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:55:23,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:55:23,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:55:23,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:55:23,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:55:23,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:55:23,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:55:23,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:55:23,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:55:23,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:55:23,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:55:23,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:55:23,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:55:23,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:55:23,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:55:23,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:55:23,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:55:23,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:55:23,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:55:23,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:55:23,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:55:23,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:55:23,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:55:23,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:55:23,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:55:23,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:55:23,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:55:23,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:55:23,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:55:23,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:55:23,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:55:23,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:55:23,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:55:23,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:55:23,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:55:23,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:55:23,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:55:23,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:55:23,956 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 04:55:24,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:55:24,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:55:24,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:55:24,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:55:24,018 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:55:24,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:55:24,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:55:24,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:55:24,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:55:24,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:55:24,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:55:24,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:55:24,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:55:24,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:55:24,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:55:24,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:55:24,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:55:24,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:55:24,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:55:24,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:55:24,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:55:24,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:24,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:55:24,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:55:24,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:55:24,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:55:24,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:55:24,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:55:24,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:55:24,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:55:24,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:55:24,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:55:24,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:55:24,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:55:24,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:55:24,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label27.c [2020-10-29 04:55:24,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22f0818b5/dd82de297b364f308b82460aab8e1b8e/FLAG26ad130dd [2020-10-29 04:55:25,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:55:25,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label27.c [2020-10-29 04:55:25,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22f0818b5/dd82de297b364f308b82460aab8e1b8e/FLAG26ad130dd [2020-10-29 04:55:25,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22f0818b5/dd82de297b364f308b82460aab8e1b8e [2020-10-29 04:55:25,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:55:25,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:55:25,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:25,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:55:25,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:55:25,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:25" (1/1) ... [2020-10-29 04:55:25,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9f3ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:25, skipping insertion in model container [2020-10-29 04:55:25,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:25" (1/1) ... [2020-10-29 04:55:25,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:55:25,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:55:26,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:26,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:55:26,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:26,874 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:55:26,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26 WrapperNode [2020-10-29 04:55:26,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:26,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:55:26,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:55:26,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:55:26,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:26,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:26,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:26,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:27,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:27,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:27,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (1/1) ... [2020-10-29 04:55:27,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:55:27,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:55:27,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:55:27,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:55:27,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (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 04:55:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:55:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:55:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:55:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:55:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:55:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:55:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:55:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:55:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:55:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:55:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:55:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:55:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:55:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:55:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:55:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:55:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:55:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:55:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:55:29,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:55:29,526 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:55:29,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:29 BoogieIcfgContainer [2020-10-29 04:55:29,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:55:29,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:55:29,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:55:29,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:55:29,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:25" (1/3) ... [2020-10-29 04:55:29,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7dc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:29, skipping insertion in model container [2020-10-29 04:55:29,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:26" (2/3) ... [2020-10-29 04:55:29,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7dc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:29, skipping insertion in model container [2020-10-29 04:55:29,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:29" (3/3) ... [2020-10-29 04:55:29,538 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label27.c [2020-10-29 04:55:29,552 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:55:29,558 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:55:29,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:55:29,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:55:29,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:55:29,605 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:55:29,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:55:29,606 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:55:29,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:55:29,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:55:29,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:55:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:55:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 04:55:29,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:29,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:29,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:29,657 INFO L82 PathProgramCache]: Analyzing trace with hash -516174384, now seen corresponding path program 1 times [2020-10-29 04:55:29,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:29,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144269193] [2020-10-29 04:55:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 04:55:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4003 [2020-10-29 04:55:34,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:34,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 04:55:34,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:55:34,767 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:34,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:55:34,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:34,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:34,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:34,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:35,011 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 04:55:35,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144269193] [2020-10-29 04:55:35,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:35,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:55:35,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103170058] [2020-10-29 04:55:35,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:55:35,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:35,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:55:35,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:55:35,048 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:55:35,460 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:55:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:39,288 INFO L93 Difference]: Finished difference Result 858 states and 1506 transitions. [2020-10-29 04:55:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:39,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-29 04:55:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:39,310 INFO L225 Difference]: With dead ends: 858 [2020-10-29 04:55:39,310 INFO L226 Difference]: Without dead ends: 466 [2020-10-29 04:55:39,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-29 04:55:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2020-10-29 04:55:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-29 04:55:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 647 transitions. [2020-10-29 04:55:39,417 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 647 transitions. Word has length 160 [2020-10-29 04:55:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:39,419 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 647 transitions. [2020-10-29 04:55:39,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:55:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 647 transitions. [2020-10-29 04:55:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 04:55:39,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:39,433 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:55:39,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:55:39,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1960320047, now seen corresponding path program 1 times [2020-10-29 04:55:39,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:39,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499647900] [2020-10-29 04:55:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:42,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 04:55:42,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-29 04:55:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:42,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:55:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 04:55:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:55:42,433 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:55:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:42,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:55:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:55:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:55:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:42,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:55:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:42,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499647900] [2020-10-29 04:55:42,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:42,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:42,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530475750] [2020-10-29 04:55:42,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:42,723 INFO L87 Difference]: Start difference. First operand 461 states and 647 transitions. Second operand 5 states. [2020-10-29 04:55:43,094 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:46,471 INFO L93 Difference]: Finished difference Result 1351 states and 1911 transitions. [2020-10-29 04:55:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:46,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-29 04:55:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:46,491 INFO L225 Difference]: With dead ends: 1351 [2020-10-29 04:55:46,491 INFO L226 Difference]: Without dead ends: 896 [2020-10-29 04:55:46,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-29 04:55:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 891. [2020-10-29 04:55:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-29 04:55:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1175 transitions. [2020-10-29 04:55:46,614 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1175 transitions. Word has length 172 [2020-10-29 04:55:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:46,616 INFO L481 AbstractCegarLoop]: Abstraction has 891 states and 1175 transitions. [2020-10-29 04:55:46,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1175 transitions. [2020-10-29 04:55:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 04:55:46,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:46,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:46,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:46,631 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash 40235481, now seen corresponding path program 1 times [2020-10-29 04:55:46,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:46,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453865150] [2020-10-29 04:55:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:55:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 04:55:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,193 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:52,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:55:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:52,360 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:55:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:55:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:55:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:55:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:55:52,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453865150] [2020-10-29 04:55:52,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:52,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:52,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520066011] [2020-10-29 04:55:52,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:52,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:52,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:52,558 INFO L87 Difference]: Start difference. First operand 891 states and 1175 transitions. Second operand 5 states. [2020-10-29 04:55:52,945 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:56,087 INFO L93 Difference]: Finished difference Result 2209 states and 3022 transitions. [2020-10-29 04:55:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:56,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-29 04:55:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:56,101 INFO L225 Difference]: With dead ends: 2209 [2020-10-29 04:55:56,101 INFO L226 Difference]: Without dead ends: 1324 [2020-10-29 04:55:56,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:56,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-10-29 04:55:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1317. [2020-10-29 04:55:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-29 04:55:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1765 transitions. [2020-10-29 04:55:56,178 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1765 transitions. Word has length 182 [2020-10-29 04:55:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:56,178 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1765 transitions. [2020-10-29 04:55:56,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1765 transitions. [2020-10-29 04:55:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 04:55:56,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:56,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:56,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:56,184 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:56,184 INFO L82 PathProgramCache]: Analyzing trace with hash 531001354, now seen corresponding path program 1 times [2020-10-29 04:55:56,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:56,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747000995] [2020-10-29 04:55:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 04:56:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 04:56:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:56:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 04:56:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:56:01,628 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:01,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:01,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:56:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:56:01,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747000995] [2020-10-29 04:56:01,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:01,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:01,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536841490] [2020-10-29 04:56:01,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:01,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:01,924 INFO L87 Difference]: Start difference. First operand 1317 states and 1765 transitions. Second operand 5 states. [2020-10-29 04:56:02,327 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:05,618 INFO L93 Difference]: Finished difference Result 3898 states and 5314 transitions. [2020-10-29 04:56:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:05,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-29 04:56:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:05,636 INFO L225 Difference]: With dead ends: 3898 [2020-10-29 04:56:05,636 INFO L226 Difference]: Without dead ends: 2587 [2020-10-29 04:56:05,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2020-10-29 04:56:05,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2575. [2020-10-29 04:56:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-29 04:56:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3391 transitions. [2020-10-29 04:56:05,763 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3391 transitions. Word has length 186 [2020-10-29 04:56:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:05,764 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3391 transitions. [2020-10-29 04:56:05,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3391 transitions. [2020-10-29 04:56:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 04:56:05,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:05,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:05,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:56:05,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1929243851, now seen corresponding path program 1 times [2020-10-29 04:56:05,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:05,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274397894] [2020-10-29 04:56:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 04:56:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:56:10,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:10,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:56:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:56:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:11,194 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:11,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:11,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:11,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:11,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:56:11,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:11,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:56:11,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:11,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:56:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:56:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 04:56:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:56:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:11,685 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-10-29 04:56:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:56:11,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274397894] [2020-10-29 04:56:11,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:11,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:11,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545218562] [2020-10-29 04:56:11,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:11,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:11,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:11,891 INFO L87 Difference]: Start difference. First operand 2575 states and 3391 transitions. Second operand 7 states. [2020-10-29 04:56:12,380 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:12,964 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:56:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:16,580 INFO L93 Difference]: Finished difference Result 6573 states and 9305 transitions. [2020-10-29 04:56:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:16,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-29 04:56:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:16,615 INFO L225 Difference]: With dead ends: 6573 [2020-10-29 04:56:16,615 INFO L226 Difference]: Without dead ends: 4004 [2020-10-29 04:56:16,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:56:16,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-10-29 04:56:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3891. [2020-10-29 04:56:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3891 states. [2020-10-29 04:56:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 5117 transitions. [2020-10-29 04:56:16,795 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 5117 transitions. Word has length 209 [2020-10-29 04:56:16,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:16,795 INFO L481 AbstractCegarLoop]: Abstraction has 3891 states and 5117 transitions. [2020-10-29 04:56:16,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 5117 transitions. [2020-10-29 04:56:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 04:56:16,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:16,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:56:16,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1133773135, now seen corresponding path program 1 times [2020-10-29 04:56:16,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:16,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379251610] [2020-10-29 04:56:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:16,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 04:56:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:56:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:21,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:56:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:56:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,142 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:22,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:22,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:22,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:22,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:22,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:56:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:56:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 04:56:22,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:56:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:56:22,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379251610] [2020-10-29 04:56:22,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:22,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:22,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006079214] [2020-10-29 04:56:22,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:22,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:22,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:22,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:22,629 INFO L87 Difference]: Start difference. First operand 3891 states and 5117 transitions. Second operand 8 states. [2020-10-29 04:56:22,892 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:23,272 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:24,315 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:29,053 INFO L93 Difference]: Finished difference Result 12826 states and 19040 transitions. [2020-10-29 04:56:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:56:29,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-29 04:56:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:29,113 INFO L225 Difference]: With dead ends: 12826 [2020-10-29 04:56:29,114 INFO L226 Difference]: Without dead ends: 8941 [2020-10-29 04:56:29,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:56:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8941 states. [2020-10-29 04:56:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8941 to 8818. [2020-10-29 04:56:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8818 states. [2020-10-29 04:56:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 11539 transitions. [2020-10-29 04:56:29,438 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 11539 transitions. Word has length 223 [2020-10-29 04:56:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:29,439 INFO L481 AbstractCegarLoop]: Abstraction has 8818 states and 11539 transitions. [2020-10-29 04:56:29,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 11539 transitions. [2020-10-29 04:56:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 04:56:29,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:29,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:56:29,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:56:29,467 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:29,468 INFO L82 PathProgramCache]: Analyzing trace with hash -518541692, now seen corresponding path program 1 times [2020-10-29 04:56:29,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:29,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422611114] [2020-10-29 04:56:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:34,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 04:56:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 04:56:34,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,862 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:35,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:35,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:35,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:35,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:35,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 04:56:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422611114] [2020-10-29 04:56:35,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:35,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:35,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398363560] [2020-10-29 04:56:35,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:35,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:35,196 INFO L87 Difference]: Start difference. First operand 8818 states and 11539 transitions. Second operand 5 states. [2020-10-29 04:56:35,475 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:39,038 INFO L93 Difference]: Finished difference Result 22277 states and 29735 transitions. [2020-10-29 04:56:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:39,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-29 04:56:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:39,113 INFO L225 Difference]: With dead ends: 22277 [2020-10-29 04:56:39,113 INFO L226 Difference]: Without dead ends: 13465 [2020-10-29 04:56:39,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13465 states. [2020-10-29 04:56:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13465 to 13420. [2020-10-29 04:56:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13420 states. [2020-10-29 04:56:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13420 states to 13420 states and 18056 transitions. [2020-10-29 04:56:39,606 INFO L78 Accepts]: Start accepts. Automaton has 13420 states and 18056 transitions. Word has length 230 [2020-10-29 04:56:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:39,607 INFO L481 AbstractCegarLoop]: Abstraction has 13420 states and 18056 transitions. [2020-10-29 04:56:39,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13420 states and 18056 transitions. [2020-10-29 04:56:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 04:56:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:39,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:56:39,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:56:39,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 757873517, now seen corresponding path program 1 times [2020-10-29 04:56:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105904026] [2020-10-29 04:56:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:44,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 04:56:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 04:56:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,072 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:45,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:56:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 04:56:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105904026] [2020-10-29 04:56:45,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:45,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:45,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616557428] [2020-10-29 04:56:45,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:45,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:45,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:45,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:45,408 INFO L87 Difference]: Start difference. First operand 13420 states and 18056 transitions. Second operand 5 states. [2020-10-29 04:56:46,027 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:48,608 INFO L93 Difference]: Finished difference Result 26652 states and 35932 transitions. [2020-10-29 04:56:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:48,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-29 04:56:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:48,660 INFO L225 Difference]: With dead ends: 26652 [2020-10-29 04:56:48,660 INFO L226 Difference]: Without dead ends: 13238 [2020-10-29 04:56:48,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13238 states. [2020-10-29 04:56:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13238 to 13205. [2020-10-29 04:56:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13205 states. [2020-10-29 04:56:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 17204 transitions. [2020-10-29 04:56:49,020 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 17204 transitions. Word has length 235 [2020-10-29 04:56:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:49,021 INFO L481 AbstractCegarLoop]: Abstraction has 13205 states and 17204 transitions. [2020-10-29 04:56:49,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 17204 transitions. [2020-10-29 04:56:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 04:56:49,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:49,061 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:49,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:49,061 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2096148012, now seen corresponding path program 1 times [2020-10-29 04:56:49,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:49,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655149208] [2020-10-29 04:56:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:56:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,507 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:56:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:56:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:56:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:56:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:56:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:56:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:56:54,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:56:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 146 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 04:56:55,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655149208] [2020-10-29 04:56:55,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:55,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:56:55,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086350530] [2020-10-29 04:56:55,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:56:55,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:55,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:56:55,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:56:55,168 INFO L87 Difference]: Start difference. First operand 13205 states and 17204 transitions. Second operand 9 states. [2020-10-29 04:56:55,461 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:56,542 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:59,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:59,831 INFO L93 Difference]: Finished difference Result 26612 states and 35470 transitions. [2020-10-29 04:56:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:59,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 260 [2020-10-29 04:56:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:59,895 INFO L225 Difference]: With dead ends: 26612 [2020-10-29 04:56:59,895 INFO L226 Difference]: Without dead ends: 13413 [2020-10-29 04:56:59,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:56:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2020-10-29 04:57:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 13285. [2020-10-29 04:57:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13285 states. [2020-10-29 04:57:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13285 states to 13285 states and 16545 transitions. [2020-10-29 04:57:00,287 INFO L78 Accepts]: Start accepts. Automaton has 13285 states and 16545 transitions. Word has length 260 [2020-10-29 04:57:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:00,288 INFO L481 AbstractCegarLoop]: Abstraction has 13285 states and 16545 transitions. [2020-10-29 04:57:00,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:57:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 13285 states and 16545 transitions. [2020-10-29 04:57:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 04:57:00,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:00,325 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 04:57:00,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:57:00,325 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1329724920, now seen corresponding path program 1 times [2020-10-29 04:57:00,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:00,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946670266] [2020-10-29 04:57:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-29 04:57:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 04:57:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:05,747 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:05,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:57:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:57:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:05,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:57:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:57:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:57:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 04:57:06,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946670266] [2020-10-29 04:57:06,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:06,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:57:06,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293960024] [2020-10-29 04:57:06,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:57:06,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:06,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:57:06,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:57:06,157 INFO L87 Difference]: Start difference. First operand 13285 states and 16545 transitions. Second operand 6 states. [2020-10-29 04:57:06,512 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:08,365 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:11,195 INFO L93 Difference]: Finished difference Result 35828 states and 45186 transitions. [2020-10-29 04:57:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:57:11,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2020-10-29 04:57:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:11,279 INFO L225 Difference]: With dead ends: 35828 [2020-10-29 04:57:11,279 INFO L226 Difference]: Without dead ends: 22549 [2020-10-29 04:57:11,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22549 states. [2020-10-29 04:57:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22549 to 22057. [2020-10-29 04:57:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22057 states. [2020-10-29 04:57:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22057 states to 22057 states and 27776 transitions. [2020-10-29 04:57:12,011 INFO L78 Accepts]: Start accepts. Automaton has 22057 states and 27776 transitions. Word has length 258 [2020-10-29 04:57:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:12,011 INFO L481 AbstractCegarLoop]: Abstraction has 22057 states and 27776 transitions. [2020-10-29 04:57:12,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:57:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 22057 states and 27776 transitions. [2020-10-29 04:57:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 04:57:12,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:12,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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] [2020-10-29 04:57:12,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:57:12,058 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:12,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1611714234, now seen corresponding path program 1 times [2020-10-29 04:57:12,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:12,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103575894] [2020-10-29 04:57:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:57:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:57:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:57:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:17,562 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:17,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:17,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:17,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:17,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:17,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:17,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:17,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:57:17,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 04:57:17,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:17,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:17,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:17,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:17,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:57:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:57:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:17,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:57:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 04:57:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:18,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:57:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:57:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:57:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:57:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:18,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:57:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:57:18,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103575894] [2020-10-29 04:57:18,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:18,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:57:18,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18211887] [2020-10-29 04:57:18,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:57:18,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:18,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:57:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:57:18,371 INFO L87 Difference]: Start difference. First operand 22057 states and 27776 transitions. Second operand 11 states. [2020-10-29 04:57:18,649 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:19,267 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:19,824 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 04:57:21,350 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-29 04:57:22,582 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:25,539 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:28,100 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:57:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:32,402 INFO L93 Difference]: Finished difference Result 84260 states and 125659 transitions. [2020-10-29 04:57:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:57:32,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2020-10-29 04:57:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:32,832 INFO L225 Difference]: With dead ends: 84260 [2020-10-29 04:57:32,832 INFO L226 Difference]: Without dead ends: 62209 [2020-10-29 04:57:32,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:57:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62209 states. [2020-10-29 04:57:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62209 to 60984. [2020-10-29 04:57:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60984 states. [2020-10-29 04:57:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60984 states to 60984 states and 83096 transitions. [2020-10-29 04:57:35,454 INFO L78 Accepts]: Start accepts. Automaton has 60984 states and 83096 transitions. Word has length 263 [2020-10-29 04:57:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:35,454 INFO L481 AbstractCegarLoop]: Abstraction has 60984 states and 83096 transitions. [2020-10-29 04:57:35,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:57:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 60984 states and 83096 transitions. [2020-10-29 04:57:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 04:57:36,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:36,056 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:57:36,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:57:36,056 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash 348770277, now seen corresponding path program 1 times [2020-10-29 04:57:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:36,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353930211] [2020-10-29 04:57:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:41,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:57:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:57:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:41,458 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:41,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:41,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:41,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:41,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:41,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:41,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:57:41,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:57:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:41,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:57:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:41,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:41,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 04:57:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 04:57:41,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:41,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 04:57:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 04:57:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:42,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:42,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 04:57:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 151 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:57:42,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353930211] [2020-10-29 04:57:42,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:42,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:42,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104620667] [2020-10-29 04:57:42,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:42,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:42,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:42,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:42,417 INFO L87 Difference]: Start difference. First operand 60984 states and 83096 transitions. Second operand 7 states. [2020-10-29 04:57:42,891 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:43,706 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:49,730 INFO L93 Difference]: Finished difference Result 137584 states and 208457 transitions. [2020-10-29 04:57:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:49,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 04:57:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:50,623 INFO L225 Difference]: With dead ends: 137584 [2020-10-29 04:57:50,623 INFO L226 Difference]: Without dead ends: 76618 [2020-10-29 04:57:50,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:57:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76618 states. [2020-10-29 04:57:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76618 to 72352. [2020-10-29 04:57:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72352 states. [2020-10-29 04:57:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72352 states to 72352 states and 94472 transitions. [2020-10-29 04:57:54,296 INFO L78 Accepts]: Start accepts. Automaton has 72352 states and 94472 transitions. Word has length 307 [2020-10-29 04:57:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:54,297 INFO L481 AbstractCegarLoop]: Abstraction has 72352 states and 94472 transitions. [2020-10-29 04:57:54,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 72352 states and 94472 transitions. [2020-10-29 04:57:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 04:57:54,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:54,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:57:54,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:54,417 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1200502654, now seen corresponding path program 1 times [2020-10-29 04:57:54,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:54,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979748144] [2020-10-29 04:57:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:59,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 04:57:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 04:57:59,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:59,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:57:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 04:57:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:59,840 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:59,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:59,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:59,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:00,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 04:58:00,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:58:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:58:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:00,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:58:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 04:58:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 04:58:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:00,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 141 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:58:00,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979748144] [2020-10-29 04:58:00,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:00,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:58:00,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420987965] [2020-10-29 04:58:00,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:00,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:00,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:00,701 INFO L87 Difference]: Start difference. First operand 72352 states and 94472 transitions. Second operand 8 states. [2020-10-29 04:58:00,985 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:02,033 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:58:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:06,984 INFO L93 Difference]: Finished difference Result 158235 states and 208059 transitions. [2020-10-29 04:58:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:58:06,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 307 [2020-10-29 04:58:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:07,358 INFO L225 Difference]: With dead ends: 158235 [2020-10-29 04:58:07,359 INFO L226 Difference]: Without dead ends: 85901 [2020-10-29 04:58:07,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:58:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85901 states. [2020-10-29 04:58:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85901 to 85612. [2020-10-29 04:58:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85612 states. [2020-10-29 04:58:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85612 states to 85612 states and 111240 transitions. [2020-10-29 04:58:10,781 INFO L78 Accepts]: Start accepts. Automaton has 85612 states and 111240 transitions. Word has length 307 [2020-10-29 04:58:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:10,782 INFO L481 AbstractCegarLoop]: Abstraction has 85612 states and 111240 transitions. [2020-10-29 04:58:10,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:58:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 85612 states and 111240 transitions. [2020-10-29 04:58:11,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 04:58:11,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:11,164 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:11,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:58:11,165 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 776878475, now seen corresponding path program 1 times [2020-10-29 04:58:11,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:11,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894681069] [2020-10-29 04:58:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-29 04:58:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:58:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:58:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 04:58:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:58:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,522 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:58:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 04:58:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:58:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:58:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 04:58:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 206 proven. 37 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 04:58:17,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894681069] [2020-10-29 04:58:17,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:17,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:58:17,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117547251] [2020-10-29 04:58:17,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:58:17,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:17,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:58:17,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:58:17,069 INFO L87 Difference]: Start difference. First operand 85612 states and 111240 transitions. Second operand 7 states. [2020-10-29 04:58:17,570 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:58:18,648 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:58:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:26,292 INFO L93 Difference]: Finished difference Result 181961 states and 255876 transitions. [2020-10-29 04:58:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:58:26,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-29 04:58:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:26,704 INFO L225 Difference]: With dead ends: 181961 [2020-10-29 04:58:26,704 INFO L226 Difference]: Without dead ends: 88423 [2020-10-29 04:58:27,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:58:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88423 states. [2020-10-29 04:58:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88423 to 74469. [2020-10-29 04:58:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74469 states. [2020-10-29 04:58:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74469 states to 74469 states and 89626 transitions. [2020-10-29 04:58:29,556 INFO L78 Accepts]: Start accepts. Automaton has 74469 states and 89626 transitions. Word has length 310 [2020-10-29 04:58:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:29,556 INFO L481 AbstractCegarLoop]: Abstraction has 74469 states and 89626 transitions. [2020-10-29 04:58:29,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:58:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 74469 states and 89626 transitions. [2020-10-29 04:58:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-29 04:58:29,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:29,622 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:29,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:58:29,622 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1418782958, now seen corresponding path program 1 times [2020-10-29 04:58:29,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:29,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710869780] [2020-10-29 04:58:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-29 04:58:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:58:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:58:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:34,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 04:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:58:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,030 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:58:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:58:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:58:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 04:58:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:58:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:58:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:58:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:58:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:58:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 04:58:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:35,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:58:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 04:58:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-29 04:58:35,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710869780] [2020-10-29 04:58:35,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:35,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:58:35,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33748294] [2020-10-29 04:58:35,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:35,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:35,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:35,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:35,828 INFO L87 Difference]: Start difference. First operand 74469 states and 89626 transitions. Second operand 8 states. [2020-10-29 04:58:36,733 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 174 [2020-10-29 04:58:37,130 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 04:58:37,320 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-29 04:58:38,637 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-29 04:58:39,873 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-29 04:58:40,276 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 04:58:41,992 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48