/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=DEEPEST --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/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:08:42,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:08:42,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:08:42,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:08:42,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:08:42,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:08:42,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:08:42,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:08:42,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:08:42,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:08:42,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:08:42,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:08:42,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:08:42,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:08:42,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:08:42,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:08:42,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:08:42,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:08:42,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:08:42,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:08:42,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:08:42,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:08:42,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:08:42,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:08:42,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:08:42,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:08:42,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:08:42,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:08:42,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:08:42,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:08:42,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:08:42,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:08:42,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:08:42,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:08:42,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:08:42,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:08:42,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:08:42,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:08:42,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:08:42,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:08:42,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:08:42,493 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 [2020-10-27 23:08:42,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:08:42,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:08:42,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:08:42,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:08:42,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:08:42,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:08:42,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:08:42,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:08:42,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:08:42,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:08:42,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:08:42,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:08:42,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:08:42,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:08:42,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:08:42,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:08:42,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:08:42,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:08:42,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:08:42,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:08:42,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:08:42,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:08:42,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:08:42,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:08:42,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:08:43,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:08:43,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:08:43,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:08:43,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:08:43,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:08:43,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 23:08:43,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20aae4c6f/185df6f3232445b48d80bf372af61169/FLAGa5441f254 [2020-10-27 23:08:43,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:08:43,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 23:08:43,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20aae4c6f/185df6f3232445b48d80bf372af61169/FLAGa5441f254 [2020-10-27 23:08:44,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20aae4c6f/185df6f3232445b48d80bf372af61169 [2020-10-27 23:08:44,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:08:44,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:08:44,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:08:44,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:08:44,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:08:44,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d7913b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44, skipping insertion in model container [2020-10-27 23:08:44,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:08:44,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:08:44,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:08:44,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:08:44,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:08:44,636 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:08:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44 WrapperNode [2020-10-27 23:08:44,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:08:44,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:08:44,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:08:44,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:08:44,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (1/1) ... [2020-10-27 23:08:44,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:08:44,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:08:44,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:08:44,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:08:44,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (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 [2020-10-27 23:08:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:08:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:08:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:08:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:08:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:08:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:08:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:08:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:08:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:08:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:08:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:08:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:08:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:08:45,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:08:45,929 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:08:45,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:08:45 BoogieIcfgContainer [2020-10-27 23:08:45,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:08:45,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:08:45,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:08:45,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:08:45,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:08:44" (1/3) ... [2020-10-27 23:08:45,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e033dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:08:45, skipping insertion in model container [2020-10-27 23:08:45,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:44" (2/3) ... [2020-10-27 23:08:45,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e033dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:08:45, skipping insertion in model container [2020-10-27 23:08:45,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:08:45" (3/3) ... [2020-10-27 23:08:45,947 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 23:08:45,963 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:08:45,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:08:45,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:08:46,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:08:46,033 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:08:46,033 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:08:46,033 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:08:46,033 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:08:46,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:08:46,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:08:46,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:08:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-27 23:08:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:08:46,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:46,088 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] [2020-10-27 23:08:46,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:46,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:46,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1255270413, now seen corresponding path program 1 times [2020-10-27 23:08:46,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:46,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063561885] [2020-10-27 23:08:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:46,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:46,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:08:46,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 23:08:46,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 23:08:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 23:08:47,241 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:08:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:08:47,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:08:47,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:08:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:47,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:08:47,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:08:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:08:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:47,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:47,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:08:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:47,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:08:47,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:08:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:47,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:08:47,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:08:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:08:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:08:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:08:47,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063561885] [2020-10-27 23:08:47,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:47,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:08:47,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452637104] [2020-10-27 23:08:47,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:08:47,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:47,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:08:47,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:08:47,576 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-27 23:08:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:08:49,350 INFO L93 Difference]: Finished difference Result 307 states and 486 transitions. [2020-10-27 23:08:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:08:49,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 23:08:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:08:49,365 INFO L225 Difference]: With dead ends: 307 [2020-10-27 23:08:49,365 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 23:08:49,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:08:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 23:08:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-27 23:08:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-27 23:08:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 280 transitions. [2020-10-27 23:08:49,459 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 280 transitions. Word has length 66 [2020-10-27 23:08:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:49,459 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 280 transitions. [2020-10-27 23:08:49,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:08:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 280 transitions. [2020-10-27 23:08:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:08:49,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:49,464 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] [2020-10-27 23:08:49,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:08:49,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1194329717, now seen corresponding path program 1 times [2020-10-27 23:08:49,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:49,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878571060] [2020-10-27 23:08:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:50,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:50,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:08:50,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-27 23:08:50,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:08:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:08:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:08:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:50,717 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:50,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:50,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:50,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:08:50,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:50,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:50,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:08:50,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:50,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 23:08:50,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:50,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:50,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:08:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:08:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:50,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:50,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:50,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:08:50,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:08:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:08:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:08:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:08:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:08:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:08:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:51,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 23:08:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:08:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:51,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:51,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:51,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:08:51,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:08:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:08:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:08:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:08:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:08:51,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878571060] [2020-10-27 23:08:51,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:51,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:08:51,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983284117] [2020-10-27 23:08:51,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:08:51,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:08:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:08:51,199 INFO L87 Difference]: Start difference. First operand 175 states and 280 transitions. Second operand 12 states. [2020-10-27 23:08:51,968 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:08:52,373 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:08:52,846 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:08:53,218 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:08:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:08:55,251 INFO L93 Difference]: Finished difference Result 302 states and 474 transitions. [2020-10-27 23:08:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:08:55,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 23:08:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:08:55,258 INFO L225 Difference]: With dead ends: 302 [2020-10-27 23:08:55,258 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 23:08:55,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:08:55,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 23:08:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-27 23:08:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-27 23:08:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-10-27 23:08:55,323 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 66 [2020-10-27 23:08:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:55,324 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-10-27 23:08:55,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:08:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-10-27 23:08:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 23:08:55,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:55,334 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] [2020-10-27 23:08:55,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:08:55,336 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:55,338 INFO L82 PathProgramCache]: Analyzing trace with hash 120280502, now seen corresponding path program 1 times [2020-10-27 23:08:55,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:55,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490201031] [2020-10-27 23:08:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:00,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:00,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:09:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:09:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 23:09:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:09:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:09:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:09:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:00,802 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:00,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:00,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:00,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:00,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:00,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 23:09:00,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:09:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:00,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:00,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:00,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:09:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:09:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:01,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:01,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:01,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:09:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:09:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:09:01,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490201031] [2020-10-27 23:09:01,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:01,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:09:01,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769783554] [2020-10-27 23:09:01,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:09:01,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:09:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:09:01,281 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 13 states. [2020-10-27 23:09:01,714 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:02,373 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:09:02,663 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:05,774 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:09:06,109 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:06,426 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:11,106 INFO L93 Difference]: Finished difference Result 1013 states and 1539 transitions. [2020-10-27 23:09:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 23:09:11,107 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-27 23:09:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:11,119 INFO L225 Difference]: With dead ends: 1013 [2020-10-27 23:09:11,119 INFO L226 Difference]: Without dead ends: 910 [2020-10-27 23:09:11,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=574, Invalid=1976, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 23:09:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-27 23:09:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 766. [2020-10-27 23:09:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-27 23:09:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1168 transitions. [2020-10-27 23:09:11,228 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1168 transitions. Word has length 95 [2020-10-27 23:09:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:11,228 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1168 transitions. [2020-10-27 23:09:11,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:09:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1168 transitions. [2020-10-27 23:09:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 23:09:11,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:11,234 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] [2020-10-27 23:09:11,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:09:11,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1186696512, now seen corresponding path program 1 times [2020-10-27 23:09:11,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:11,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095320369] [2020-10-27 23:09:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 23:09:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:09:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:09:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:16,644 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:16,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:16,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:16,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 23:09:16,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:09:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:16,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:16,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:09:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:16,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:16,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:09:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:09:17,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095320369] [2020-10-27 23:09:17,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:17,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:09:17,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238750410] [2020-10-27 23:09:17,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:09:17,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:17,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:09:17,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:09:17,199 INFO L87 Difference]: Start difference. First operand 766 states and 1168 transitions. Second operand 14 states. [2020-10-27 23:09:17,626 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:09:18,324 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:09:18,661 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:19,023 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:09:22,117 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:22,460 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:09:22,802 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:23,154 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:09:24,880 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-27 23:09:27,041 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-27 23:09:28,516 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:28,977 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:09:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:33,652 INFO L93 Difference]: Finished difference Result 3877 states and 6078 transitions. [2020-10-27 23:09:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 23:09:33,653 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-27 23:09:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:33,682 INFO L225 Difference]: With dead ends: 3877 [2020-10-27 23:09:33,682 INFO L226 Difference]: Without dead ends: 3183 [2020-10-27 23:09:33,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=953, Invalid=3877, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 23:09:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2020-10-27 23:09:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 2149. [2020-10-27 23:09:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2149 states. [2020-10-27 23:09:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3345 transitions. [2020-10-27 23:09:33,946 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3345 transitions. Word has length 96 [2020-10-27 23:09:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:33,947 INFO L481 AbstractCegarLoop]: Abstraction has 2149 states and 3345 transitions. [2020-10-27 23:09:33,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:09:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3345 transitions. [2020-10-27 23:09:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:09:33,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:33,950 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] [2020-10-27 23:09:33,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:09:33,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1716378593, now seen corresponding path program 1 times [2020-10-27 23:09:33,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:33,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431529567] [2020-10-27 23:09:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:09:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:09:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:09:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:09:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:09:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,323 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:39,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:09:39,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:39,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 23:09:39,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:09:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:09:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:39,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:09:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:09:39,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431529567] [2020-10-27 23:09:39,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:39,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:09:39,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125924926] [2020-10-27 23:09:39,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:09:39,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:39,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:09:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:09:39,670 INFO L87 Difference]: Start difference. First operand 2149 states and 3345 transitions. Second operand 10 states. [2020-10-27 23:09:40,000 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:40,618 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:09:42,960 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:43,293 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:47,338 INFO L93 Difference]: Finished difference Result 8834 states and 13767 transitions. [2020-10-27 23:09:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:09:47,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-27 23:09:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:47,387 INFO L225 Difference]: With dead ends: 8834 [2020-10-27 23:09:47,387 INFO L226 Difference]: Without dead ends: 6786 [2020-10-27 23:09:47,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:09:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-27 23:09:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 5702. [2020-10-27 23:09:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5702 states. [2020-10-27 23:09:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 8873 transitions. [2020-10-27 23:09:47,838 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 8873 transitions. Word has length 97 [2020-10-27 23:09:47,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:47,839 INFO L481 AbstractCegarLoop]: Abstraction has 5702 states and 8873 transitions. [2020-10-27 23:09:47,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:09:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 8873 transitions. [2020-10-27 23:09:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:09:47,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:47,843 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] [2020-10-27 23:09:47,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:09:47,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1175340617, now seen corresponding path program 1 times [2020-10-27 23:09:47,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:47,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093361925] [2020-10-27 23:09:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:52,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:52,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:09:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,283 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:53,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:09:53,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:09:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:09:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:53,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:09:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:53,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:53,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:53,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:53,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:09:53,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:09:53,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 23:09:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:09:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:09:53,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093361925] [2020-10-27 23:09:53,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:53,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:09:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101659985] [2020-10-27 23:09:53,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:09:53,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:09:53,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:09:53,670 INFO L87 Difference]: Start difference. First operand 5702 states and 8873 transitions. Second operand 10 states. [2020-10-27 23:09:54,009 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:54,648 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:09:56,310 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:56,639 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:10:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:00,901 INFO L93 Difference]: Finished difference Result 33519 states and 52155 transitions. [2020-10-27 23:10:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:10:00,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-27 23:10:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:01,057 INFO L225 Difference]: With dead ends: 33519 [2020-10-27 23:10:01,057 INFO L226 Difference]: Without dead ends: 27918 [2020-10-27 23:10:01,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:10:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27918 states. [2020-10-27 23:10:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27918 to 23379. [2020-10-27 23:10:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23379 states. [2020-10-27 23:10:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23379 states to 23379 states and 36429 transitions. [2020-10-27 23:10:02,785 INFO L78 Accepts]: Start accepts. Automaton has 23379 states and 36429 transitions. Word has length 98 [2020-10-27 23:10:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:02,786 INFO L481 AbstractCegarLoop]: Abstraction has 23379 states and 36429 transitions. [2020-10-27 23:10:02,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:10:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23379 states and 36429 transitions. [2020-10-27 23:10:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:10:02,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:02,789 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] [2020-10-27 23:10:02,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:10:02,790 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash -499915727, now seen corresponding path program 1 times [2020-10-27 23:10:02,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:02,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103197677] [2020-10-27 23:10:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:07,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:07,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 23:10:07,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:10:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:10:07,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:10:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:10:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:08,271 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:08,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:10:08,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:10:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:08,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:10:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:10:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:10:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:08,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:10:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:10:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:08,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:10:08,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:10:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:08,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:08,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:08,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103197677] [2020-10-27 23:10:08,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:08,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:10:08,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264319578] [2020-10-27 23:10:08,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:10:08,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:08,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:10:08,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:10:08,662 INFO L87 Difference]: Start difference. First operand 23379 states and 36429 transitions. Second operand 8 states. [2020-10-27 23:10:09,006 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:10,378 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:15,706 INFO L93 Difference]: Finished difference Result 88857 states and 138750 transitions. [2020-10-27 23:10:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:10:15,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-27 23:10:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:15,998 INFO L225 Difference]: With dead ends: 88857 [2020-10-27 23:10:15,998 INFO L226 Difference]: Without dead ends: 65564 [2020-10-27 23:10:16,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:10:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65564 states. [2020-10-27 23:10:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65564 to 55424. [2020-10-27 23:10:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55424 states. [2020-10-27 23:10:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55424 states to 55424 states and 85374 transitions. [2020-10-27 23:10:20,320 INFO L78 Accepts]: Start accepts. Automaton has 55424 states and 85374 transitions. Word has length 100 [2020-10-27 23:10:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:20,321 INFO L481 AbstractCegarLoop]: Abstraction has 55424 states and 85374 transitions. [2020-10-27 23:10:20,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:10:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55424 states and 85374 transitions. [2020-10-27 23:10:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:10:20,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:20,326 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] [2020-10-27 23:10:20,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:10:20,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash 640207345, now seen corresponding path program 1 times [2020-10-27 23:10:20,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:20,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920648347] [2020-10-27 23:10:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 23:10:25,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:10:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,706 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:25,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:10:25,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:10:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:25,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:25,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:10:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 23:10:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:10:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 23:10:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:26,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920648347] [2020-10-27 23:10:26,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:26,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:10:26,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934990639] [2020-10-27 23:10:26,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:10:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:26,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:10:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:10:26,042 INFO L87 Difference]: Start difference. First operand 55424 states and 85374 transitions. Second operand 9 states. [2020-10-27 23:10:26,406 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:28,323 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:10:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:32,760 INFO L93 Difference]: Finished difference Result 132120 states and 202819 transitions. [2020-10-27 23:10:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:10:32,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-27 23:10:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:33,074 INFO L225 Difference]: With dead ends: 132120 [2020-10-27 23:10:33,074 INFO L226 Difference]: Without dead ends: 76784 [2020-10-27 23:10:33,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:10:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76784 states. [2020-10-27 23:10:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76784 to 65850. [2020-10-27 23:10:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65850 states. [2020-10-27 23:10:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65850 states to 65850 states and 99514 transitions. [2020-10-27 23:10:37,769 INFO L78 Accepts]: Start accepts. Automaton has 65850 states and 99514 transitions. Word has length 101 [2020-10-27 23:10:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:37,769 INFO L481 AbstractCegarLoop]: Abstraction has 65850 states and 99514 transitions. [2020-10-27 23:10:37,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:10:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 65850 states and 99514 transitions. [2020-10-27 23:10:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 23:10:37,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:37,771 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] [2020-10-27 23:10:37,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:10:37,772 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash 569247046, now seen corresponding path program 1 times [2020-10-27 23:10:37,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:37,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043032344] [2020-10-27 23:10:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:42,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:42,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:10:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:10:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,122 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:10:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:10:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 23:10:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 23:10:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:10:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:43,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043032344] [2020-10-27 23:10:43,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:43,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:10:43,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291616697] [2020-10-27 23:10:43,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:10:43,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:43,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:10:43,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:10:43,551 INFO L87 Difference]: Start difference. First operand 65850 states and 99514 transitions. Second operand 13 states. [2020-10-27 23:10:43,898 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:44,547 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:44,850 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:46,120 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:10:46,950 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:10:49,263 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:10:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:55,997 INFO L93 Difference]: Finished difference Result 163057 states and 246875 transitions. [2020-10-27 23:10:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 23:10:55,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-27 23:10:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:56,675 INFO L225 Difference]: With dead ends: 163057 [2020-10-27 23:10:56,675 INFO L226 Difference]: Without dead ends: 97295 [2020-10-27 23:10:56,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 23:10:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97295 states. [2020-10-27 23:11:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97295 to 81971. [2020-10-27 23:11:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81971 states. [2020-10-27 23:11:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81971 states to 81971 states and 124201 transitions. [2020-10-27 23:11:02,169 INFO L78 Accepts]: Start accepts. Automaton has 81971 states and 124201 transitions. Word has length 102 [2020-10-27 23:11:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:02,170 INFO L481 AbstractCegarLoop]: Abstraction has 81971 states and 124201 transitions. [2020-10-27 23:11:02,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:11:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 81971 states and 124201 transitions. [2020-10-27 23:11:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:11:02,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:02,174 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] [2020-10-27 23:11:02,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:11:02,174 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash -110067206, now seen corresponding path program 1 times [2020-10-27 23:11:02,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:02,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176063973] [2020-10-27 23:11:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:11:07,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:11:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:11:07,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 23:11:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:11:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,580 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:11:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:07,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:11:07,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:11:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:11:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:11:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:11:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 23:11:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:11:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 23:11:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:07,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176063973] [2020-10-27 23:11:07,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:07,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:11:07,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917303624] [2020-10-27 23:11:07,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:11:07,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:07,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:11:07,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:11:07,868 INFO L87 Difference]: Start difference. First operand 81971 states and 124201 transitions. Second operand 9 states. [2020-10-27 23:11:08,233 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:11:10,890 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:11:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:19,461 INFO L93 Difference]: Finished difference Result 244091 states and 369237 transitions. [2020-10-27 23:11:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:11:19,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-27 23:11:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:20,272 INFO L225 Difference]: With dead ends: 244091 [2020-10-27 23:11:20,272 INFO L226 Difference]: Without dead ends: 162208 [2020-10-27 23:11:20,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:11:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162208 states. [2020-10-27 23:11:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162208 to 141224. [2020-10-27 23:11:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141224 states. [2020-10-27 23:11:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141224 states to 141224 states and 209466 transitions. [2020-10-27 23:11:30,115 INFO L78 Accepts]: Start accepts. Automaton has 141224 states and 209466 transitions. Word has length 103 [2020-10-27 23:11:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:30,115 INFO L481 AbstractCegarLoop]: Abstraction has 141224 states and 209466 transitions. [2020-10-27 23:11:30,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:11:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 141224 states and 209466 transitions. [2020-10-27 23:11:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:11:30,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:30,117 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] [2020-10-27 23:11:30,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:11:30,117 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash -496935254, now seen corresponding path program 1 times [2020-10-27 23:11:30,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:30,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593837885] [2020-10-27 23:11:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,468 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:35,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:35,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 23:11:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:11:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:11:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 23:11:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:35,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:11:35,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:35,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593837885] [2020-10-27 23:11:35,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:35,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:11:35,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680183149] [2020-10-27 23:11:35,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:11:35,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:35,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:11:35,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:11:35,707 INFO L87 Difference]: Start difference. First operand 141224 states and 209466 transitions. Second operand 8 states. [2020-10-27 23:11:37,468 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:11:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:53,885 INFO L93 Difference]: Finished difference Result 430685 states and 649950 transitions. [2020-10-27 23:11:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:11:53,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-27 23:11:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:55,659 INFO L225 Difference]: With dead ends: 430685 [2020-10-27 23:11:55,660 INFO L226 Difference]: Without dead ends: 289549 [2020-10-27 23:11:55,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 23:11:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289549 states.