/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/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:10:18,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:10:18,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:10:18,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:10:18,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:10:18,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:10:18,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:10:18,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:10:18,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:10:18,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:10:18,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:10:18,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:10:18,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:10:18,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:10:18,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:10:18,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:10:18,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:10:18,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:10:18,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:10:18,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:10:18,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:10:18,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:10:18,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:10:18,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:10:18,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:10:18,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:10:18,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:10:18,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:10:18,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:10:18,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:10:18,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:10:18,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:10:18,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:10:18,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:10:18,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:10:18,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:10:18,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:10:18,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:10:18,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:10:18,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:10:18,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:10:18,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 01:10:18,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:10:18,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:10:18,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:10:18,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:10:18,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:10:18,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:10:18,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:10:18,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:10:18,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:10:18,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:10:18,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:10:18,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:10:18,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:10:18,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:10:18,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:10:18,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:10:18,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:10:18,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:10:18,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:10:18,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:10:18,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:10:18,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:10:18,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:10:18,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:10:18,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:10:18,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:10:18,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:10:18,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:10:18,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:10:18,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:10:19,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:10:19,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:10:19,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:10:19,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:10:19,141 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:10:19,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-28 01:10:19,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad9cc0374/012f5954dcf8434d9916179b88e1d9d3/FLAG45b846480 [2020-10-28 01:10:19,878 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:10:19,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-28 01:10:19,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad9cc0374/012f5954dcf8434d9916179b88e1d9d3/FLAG45b846480 [2020-10-28 01:10:20,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad9cc0374/012f5954dcf8434d9916179b88e1d9d3 [2020-10-28 01:10:20,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:10:20,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:10:20,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:10:20,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:10:20,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:10:20,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34abccad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20, skipping insertion in model container [2020-10-28 01:10:20,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:10:20,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:10:20,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:10:20,643 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:10:20,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:10:20,785 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:10:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20 WrapperNode [2020-10-28 01:10:20,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:10:20,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:10:20,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:10:20,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:10:20,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... [2020-10-28 01:10:20,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:10:20,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:10:20,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:10:20,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:10:20,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:10:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:10:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:10:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:10:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 01:10:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-28 01:10:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-28 01:10:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-28 01:10:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-28 01:10:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-28 01:10:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 01:10:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 01:10:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:10:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 01:10:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 01:10:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:10:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:10:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:10:21,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:10:21,793 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 01:10:21,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:10:21 BoogieIcfgContainer [2020-10-28 01:10:21,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:10:21,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:10:21,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:10:21,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:10:21,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:10:20" (1/3) ... [2020-10-28 01:10:21,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20283e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:10:21, skipping insertion in model container [2020-10-28 01:10:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:20" (2/3) ... [2020-10-28 01:10:21,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20283e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:10:21, skipping insertion in model container [2020-10-28 01:10:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:10:21" (3/3) ... [2020-10-28 01:10:21,806 INFO L111 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-28 01:10:21,822 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:10:21,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:10:21,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:10:21,916 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:10:21,916 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:10:21,916 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:10:21,916 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:10:21,916 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:10:21,917 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:10:21,917 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:10:21,917 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:10:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-28 01:10:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 01:10:21,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:21,974 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] [2020-10-28 01:10:21,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 184578931, now seen corresponding path program 1 times [2020-10-28 01:10:21,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:21,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378885994] [2020-10-28 01:10:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:26,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:26,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:10:26,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:10:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-28 01:10:26,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:10:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:10:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:10:26,697 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:26,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:26,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:26,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378885994] [2020-10-28 01:10:26,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:26,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:10:26,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035418616] [2020-10-28 01:10:26,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:10:26,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:10:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:10:26,776 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-28 01:10:28,022 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:28,442 INFO L93 Difference]: Finished difference Result 448 states and 780 transitions. [2020-10-28 01:10:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:10:28,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 01:10:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:28,459 INFO L225 Difference]: With dead ends: 448 [2020-10-28 01:10:28,460 INFO L226 Difference]: Without dead ends: 302 [2020-10-28 01:10:28,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:10:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-28 01:10:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 265. [2020-10-28 01:10:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-28 01:10:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 432 transitions. [2020-10-28 01:10:28,554 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 432 transitions. Word has length 47 [2020-10-28 01:10:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:28,554 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 432 transitions. [2020-10-28 01:10:28,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:10:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 432 transitions. [2020-10-28 01:10:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 01:10:28,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:28,558 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] [2020-10-28 01:10:28,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:10:28,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2116243659, now seen corresponding path program 1 times [2020-10-28 01:10:28,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:28,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535787658] [2020-10-28 01:10:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2838 [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 01:10:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 01:10:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:31,713 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 01:10:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:31,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535787658] [2020-10-28 01:10:31,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:31,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:10:31,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465426298] [2020-10-28 01:10:31,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:10:31,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:31,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:10:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:10:31,764 INFO L87 Difference]: Start difference. First operand 265 states and 432 transitions. Second operand 5 states. [2020-10-28 01:10:31,922 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:33,090 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:10:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:33,759 INFO L93 Difference]: Finished difference Result 962 states and 1588 transitions. [2020-10-28 01:10:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:10:33,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-28 01:10:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:33,768 INFO L225 Difference]: With dead ends: 962 [2020-10-28 01:10:33,768 INFO L226 Difference]: Without dead ends: 724 [2020-10-28 01:10:33,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:10:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-28 01:10:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 529. [2020-10-28 01:10:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-10-28 01:10:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 863 transitions. [2020-10-28 01:10:33,867 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 863 transitions. Word has length 47 [2020-10-28 01:10:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:33,868 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 863 transitions. [2020-10-28 01:10:33,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:10:33,868 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 863 transitions. [2020-10-28 01:10:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 01:10:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:33,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:33,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:10:33,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:33,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1644790922, now seen corresponding path program 1 times [2020-10-28 01:10:33,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:33,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155274579] [2020-10-28 01:10:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 01:10:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:10:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:39,146 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:39,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:10:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:10:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:39,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:10:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:10:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:10:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:10:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:39,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155274579] [2020-10-28 01:10:39,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:39,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:10:39,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209154006] [2020-10-28 01:10:39,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:10:39,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:39,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:10:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:10:39,244 INFO L87 Difference]: Start difference. First operand 529 states and 863 transitions. Second operand 5 states. [2020-10-28 01:10:39,724 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:41,184 INFO L93 Difference]: Finished difference Result 1579 states and 2598 transitions. [2020-10-28 01:10:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:10:41,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-28 01:10:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:41,202 INFO L225 Difference]: With dead ends: 1579 [2020-10-28 01:10:41,203 INFO L226 Difference]: Without dead ends: 1101 [2020-10-28 01:10:41,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:10:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-10-28 01:10:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1005. [2020-10-28 01:10:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-28 01:10:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1664 transitions. [2020-10-28 01:10:41,358 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1664 transitions. Word has length 67 [2020-10-28 01:10:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:41,359 INFO L481 AbstractCegarLoop]: Abstraction has 1005 states and 1664 transitions. [2020-10-28 01:10:41,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:10:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1664 transitions. [2020-10-28 01:10:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 01:10:41,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:41,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:41,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:10:41,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:41,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1049180861, now seen corresponding path program 1 times [2020-10-28 01:10:41,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:41,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617301940] [2020-10-28 01:10:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:46,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:46,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:10:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:10:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:10:46,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:46,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:10:46,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 01:10:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:10:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:46,570 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:46,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:46,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:10:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:10:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:10:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:46,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:46,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:10:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:10:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:46,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:10:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:46,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617301940] [2020-10-28 01:10:46,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:46,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:10:46,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122320622] [2020-10-28 01:10:46,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:10:46,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:46,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:10:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:10:46,683 INFO L87 Difference]: Start difference. First operand 1005 states and 1664 transitions. Second operand 6 states. [2020-10-28 01:10:46,835 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:48,317 INFO L93 Difference]: Finished difference Result 3031 states and 5155 transitions. [2020-10-28 01:10:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:10:48,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 01:10:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:48,335 INFO L225 Difference]: With dead ends: 3031 [2020-10-28 01:10:48,335 INFO L226 Difference]: Without dead ends: 2115 [2020-10-28 01:10:48,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:10:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-10-28 01:10:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1947. [2020-10-28 01:10:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-10-28 01:10:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 3309 transitions. [2020-10-28 01:10:48,557 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 3309 transitions. Word has length 76 [2020-10-28 01:10:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:48,557 INFO L481 AbstractCegarLoop]: Abstraction has 1947 states and 3309 transitions. [2020-10-28 01:10:48,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:10:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 3309 transitions. [2020-10-28 01:10:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 01:10:48,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:48,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:48,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:10:48,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash -947226400, now seen corresponding path program 1 times [2020-10-28 01:10:48,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:48,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616858220] [2020-10-28 01:10:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:48,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:50,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 01:10:53,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:10:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:10:53,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:53,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 01:10:53,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:10:53,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,765 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:53,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:53,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:10:53,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:10:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:10:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:10:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 01:10:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:10:53,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:10:53,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:10:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 01:10:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:10:53,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:10:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:10:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:53,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616858220] [2020-10-28 01:10:53,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:53,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:10:53,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219626756] [2020-10-28 01:10:53,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:10:53,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:10:53,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:10:53,904 INFO L87 Difference]: Start difference. First operand 1947 states and 3309 transitions. Second operand 7 states. [2020-10-28 01:10:54,518 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:10:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:56,859 INFO L93 Difference]: Finished difference Result 5176 states and 9015 transitions. [2020-10-28 01:10:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 01:10:56,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-28 01:10:56,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:56,889 INFO L225 Difference]: With dead ends: 5176 [2020-10-28 01:10:56,889 INFO L226 Difference]: Without dead ends: 3385 [2020-10-28 01:10:56,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:10:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2020-10-28 01:10:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2591. [2020-10-28 01:10:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-28 01:10:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 4384 transitions. [2020-10-28 01:10:57,166 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 4384 transitions. Word has length 90 [2020-10-28 01:10:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:57,166 INFO L481 AbstractCegarLoop]: Abstraction has 2591 states and 4384 transitions. [2020-10-28 01:10:57,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:10:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 4384 transitions. [2020-10-28 01:10:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 01:10:57,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:57,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:57,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:10:57,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash 243841824, now seen corresponding path program 1 times [2020-10-28 01:10:57,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:57,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725317734] [2020-10-28 01:10:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:01,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:01,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:11:01,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:11:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4391 [2020-10-28 01:11:01,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:11:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 01:11:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:11:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:01,761 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:01,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:01,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:11:01,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:11:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:01,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:11:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:11:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:11:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:01,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:11:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:11:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:01,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:01,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725317734] [2020-10-28 01:11:01,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:01,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:11:01,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455984568] [2020-10-28 01:11:01,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:01,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:01,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:01,905 INFO L87 Difference]: Start difference. First operand 2591 states and 4384 transitions. Second operand 8 states. [2020-10-28 01:11:02,067 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:05,247 INFO L93 Difference]: Finished difference Result 10146 states and 17952 transitions. [2020-10-28 01:11:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:11:05,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-28 01:11:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:05,325 INFO L225 Difference]: With dead ends: 10146 [2020-10-28 01:11:05,325 INFO L226 Difference]: Without dead ends: 7853 [2020-10-28 01:11:05,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:11:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7853 states. [2020-10-28 01:11:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 4995. [2020-10-28 01:11:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4995 states. [2020-10-28 01:11:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 8583 transitions. [2020-10-28 01:11:05,910 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 8583 transitions. Word has length 83 [2020-10-28 01:11:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:05,910 INFO L481 AbstractCegarLoop]: Abstraction has 4995 states and 8583 transitions. [2020-10-28 01:11:05,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:11:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 8583 transitions. [2020-10-28 01:11:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 01:11:05,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:05,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:05,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:11:05,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 320742622, now seen corresponding path program 1 times [2020-10-28 01:11:05,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:05,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042809038] [2020-10-28 01:11:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:08,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:11:08,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:11:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-28 01:11:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:11:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:11:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:08,644 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:08,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:08,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:08,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:11:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:08,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:11:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 01:11:08,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042809038] [2020-10-28 01:11:08,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:08,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:11:08,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99203536] [2020-10-28 01:11:08,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:11:08,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:11:08,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:11:08,768 INFO L87 Difference]: Start difference. First operand 4995 states and 8583 transitions. Second operand 7 states. [2020-10-28 01:11:08,931 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:10,918 INFO L93 Difference]: Finished difference Result 11340 states and 19341 transitions. [2020-10-28 01:11:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:11:10,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-28 01:11:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:10,972 INFO L225 Difference]: With dead ends: 11340 [2020-10-28 01:11:10,972 INFO L226 Difference]: Without dead ends: 6649 [2020-10-28 01:11:11,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:11:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2020-10-28 01:11:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 4799. [2020-10-28 01:11:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4799 states. [2020-10-28 01:11:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 8203 transitions. [2020-10-28 01:11:11,456 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 8203 transitions. Word has length 83 [2020-10-28 01:11:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:11,456 INFO L481 AbstractCegarLoop]: Abstraction has 4799 states and 8203 transitions. [2020-10-28 01:11:11,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:11:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 8203 transitions. [2020-10-28 01:11:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 01:11:11,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:11,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:11,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:11:11,484 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:11,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1087817093, now seen corresponding path program 1 times [2020-10-28 01:11:11,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:11,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127516365] [2020-10-28 01:11:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:14,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:14,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:11:14,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:11:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-28 01:11:14,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:11:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:11:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:14,481 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:14,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:14,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:14,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:14,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:14,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:11:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:14,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:14,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 01:11:14,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127516365] [2020-10-28 01:11:14,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:14,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:11:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623873067] [2020-10-28 01:11:14,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:11:14,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:11:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:11:14,591 INFO L87 Difference]: Start difference. First operand 4799 states and 8203 transitions. Second operand 6 states. [2020-10-28 01:11:14,783 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:11:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:17,034 INFO L93 Difference]: Finished difference Result 12848 states and 22069 transitions. [2020-10-28 01:11:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:11:17,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 01:11:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:17,076 INFO L225 Difference]: With dead ends: 12848 [2020-10-28 01:11:17,077 INFO L226 Difference]: Without dead ends: 6926 [2020-10-28 01:11:17,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:11:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2020-10-28 01:11:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 5407. [2020-10-28 01:11:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5407 states. [2020-10-28 01:11:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 9132 transitions. [2020-10-28 01:11:17,632 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 9132 transitions. Word has length 76 [2020-10-28 01:11:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:17,633 INFO L481 AbstractCegarLoop]: Abstraction has 5407 states and 9132 transitions. [2020-10-28 01:11:17,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:11:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 9132 transitions. [2020-10-28 01:11:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 01:11:17,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:17,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:17,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:11:17,676 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:17,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1341025942, now seen corresponding path program 1 times [2020-10-28 01:11:17,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:17,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166430874] [2020-10-28 01:11:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 01:11:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:11:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:22,921 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:22,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:22,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:22,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:11:22,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:22,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:11:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:11:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:23,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 01:11:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:23,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:23,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:23,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 01:11:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:11:23,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166430874] [2020-10-28 01:11:23,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:23,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:11:23,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669541935] [2020-10-28 01:11:23,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:11:23,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:23,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:11:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:11:23,095 INFO L87 Difference]: Start difference. First operand 5407 states and 9132 transitions. Second operand 7 states. [2020-10-28 01:11:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:24,168 INFO L93 Difference]: Finished difference Result 12195 states and 20614 transitions. [2020-10-28 01:11:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 01:11:24,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 01:11:24,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:24,211 INFO L225 Difference]: With dead ends: 12195 [2020-10-28 01:11:24,211 INFO L226 Difference]: Without dead ends: 6916 [2020-10-28 01:11:24,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:11:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2020-10-28 01:11:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 5422. [2020-10-28 01:11:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-10-28 01:11:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 9118 transitions. [2020-10-28 01:11:24,688 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 9118 transitions. Word has length 122 [2020-10-28 01:11:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:24,689 INFO L481 AbstractCegarLoop]: Abstraction has 5422 states and 9118 transitions. [2020-10-28 01:11:24,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:11:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 9118 transitions. [2020-10-28 01:11:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 01:11:24,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:24,728 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:24,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:11:24,728 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash -197314088, now seen corresponding path program 1 times [2020-10-28 01:11:24,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:24,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155463890] [2020-10-28 01:11:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 01:11:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:29,910 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:29,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:11:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 01:11:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:11:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 01:11:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:30,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:30,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:30,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:30,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:30,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 01:11:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:30,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:11:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155463890] [2020-10-28 01:11:30,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:30,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:11:30,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62327745] [2020-10-28 01:11:30,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:11:30,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:11:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:11:30,099 INFO L87 Difference]: Start difference. First operand 5422 states and 9118 transitions. Second operand 7 states. [2020-10-28 01:11:30,254 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:32,419 INFO L93 Difference]: Finished difference Result 18977 states and 31737 transitions. [2020-10-28 01:11:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:11:32,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 01:11:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:32,497 INFO L225 Difference]: With dead ends: 18977 [2020-10-28 01:11:32,497 INFO L226 Difference]: Without dead ends: 13595 [2020-10-28 01:11:32,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:11:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13595 states. [2020-10-28 01:11:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13595 to 10618. [2020-10-28 01:11:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10618 states. [2020-10-28 01:11:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 17687 transitions. [2020-10-28 01:11:33,463 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 17687 transitions. Word has length 122 [2020-10-28 01:11:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:33,464 INFO L481 AbstractCegarLoop]: Abstraction has 10618 states and 17687 transitions. [2020-10-28 01:11:33,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:11:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 17687 transitions. [2020-10-28 01:11:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 01:11:33,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:33,501 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:33,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:11:33,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1970476753, now seen corresponding path program 1 times [2020-10-28 01:11:33,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:33,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229898594] [2020-10-28 01:11:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:11:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,700 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:11:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:11:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:11:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:11:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:11:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 01:11:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:38,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:38,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 01:11:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:38,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:11:38,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229898594] [2020-10-28 01:11:38,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:38,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:11:38,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967953737] [2020-10-28 01:11:38,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:38,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:38,925 INFO L87 Difference]: Start difference. First operand 10618 states and 17687 transitions. Second operand 8 states. [2020-10-28 01:11:39,107 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:41,038 INFO L93 Difference]: Finished difference Result 23575 states and 39147 transitions. [2020-10-28 01:11:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:11:41,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 01:11:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:41,122 INFO L225 Difference]: With dead ends: 23575 [2020-10-28 01:11:41,122 INFO L226 Difference]: Without dead ends: 13003 [2020-10-28 01:11:41,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:11:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13003 states. [2020-10-28 01:11:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13003 to 10030. [2020-10-28 01:11:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10030 states. [2020-10-28 01:11:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10030 states to 10030 states and 16487 transitions. [2020-10-28 01:11:42,164 INFO L78 Accepts]: Start accepts. Automaton has 10030 states and 16487 transitions. Word has length 124 [2020-10-28 01:11:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:42,164 INFO L481 AbstractCegarLoop]: Abstraction has 10030 states and 16487 transitions. [2020-10-28 01:11:42,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:11:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10030 states and 16487 transitions. [2020-10-28 01:11:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 01:11:42,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:42,202 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:42,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:11:42,202 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:42,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1150220473, now seen corresponding path program 1 times [2020-10-28 01:11:42,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:42,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898987258] [2020-10-28 01:11:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 01:11:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:11:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 01:11:47,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 01:11:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:11:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,495 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:47,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:11:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:11:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:11:47,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:47,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:11:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 01:11:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:47,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 01:11:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:11:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 01:11:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:47,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:47,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:47,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:47,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:47,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:47,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:11:47,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898987258] [2020-10-28 01:11:47,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:11:47,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 01:11:47,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688246262] [2020-10-28 01:11:47,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:47,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:47,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:47,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:47,771 INFO L87 Difference]: Start difference. First operand 10030 states and 16487 transitions. Second operand 8 states. [2020-10-28 01:11:48,121 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 01:11:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:51,289 INFO L93 Difference]: Finished difference Result 29881 states and 50557 transitions. [2020-10-28 01:11:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 01:11:51,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-28 01:11:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:51,402 INFO L225 Difference]: With dead ends: 29881 [2020-10-28 01:11:51,402 INFO L226 Difference]: Without dead ends: 17965 [2020-10-28 01:11:51,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 01:11:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17965 states. [2020-10-28 01:11:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17965 to 11818. [2020-10-28 01:11:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11818 states. [2020-10-28 01:11:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 19016 transitions. [2020-10-28 01:11:52,596 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 19016 transitions. Word has length 134 [2020-10-28 01:11:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:52,596 INFO L481 AbstractCegarLoop]: Abstraction has 11818 states and 19016 transitions. [2020-10-28 01:11:52,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:11:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 19016 transitions. [2020-10-28 01:11:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 01:11:52,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:52,634 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:52,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:11:52,634 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1563812015, now seen corresponding path program 1 times [2020-10-28 01:11:52,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:52,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416864491] [2020-10-28 01:11:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:11:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 01:11:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 01:11:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:57,828 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:11:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:11:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:57,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:11:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:57,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:11:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 01:11:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:57,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:57,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 01:11:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:58,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:58,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:58,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:58,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:11:58,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416864491] [2020-10-28 01:11:58,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:11:58,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 01:11:58,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956238901] [2020-10-28 01:11:58,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:58,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:58,040 INFO L87 Difference]: Start difference. First operand 11818 states and 19016 transitions. Second operand 8 states. [2020-10-28 01:11:58,224 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:00,804 INFO L93 Difference]: Finished difference Result 27270 states and 43742 transitions. [2020-10-28 01:12:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:12:00,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 01:12:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:00,892 INFO L225 Difference]: With dead ends: 27270 [2020-10-28 01:12:00,892 INFO L226 Difference]: Without dead ends: 15490 [2020-10-28 01:12:00,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:12:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15490 states. [2020-10-28 01:12:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15490 to 11505. [2020-10-28 01:12:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11505 states. [2020-10-28 01:12:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11505 states to 11505 states and 18312 transitions. [2020-10-28 01:12:02,205 INFO L78 Accepts]: Start accepts. Automaton has 11505 states and 18312 transitions. Word has length 124 [2020-10-28 01:12:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:02,206 INFO L481 AbstractCegarLoop]: Abstraction has 11505 states and 18312 transitions. [2020-10-28 01:12:02,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11505 states and 18312 transitions. [2020-10-28 01:12:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 01:12:02,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:02,242 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:02,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:12:02,242 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:02,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 959782479, now seen corresponding path program 1 times [2020-10-28 01:12:02,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:02,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242199929] [2020-10-28 01:12:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2734 [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 01:12:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:12:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,214 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:05,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:05,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:12:05,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:12:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:12:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 01:12:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:05,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:05,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 01:12:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:12:05,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242199929] [2020-10-28 01:12:05,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:12:05,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:12:05,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964408527] [2020-10-28 01:12:05,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:12:05,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:05,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:12:05,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:12:05,435 INFO L87 Difference]: Start difference. First operand 11505 states and 18312 transitions. Second operand 8 states. [2020-10-28 01:12:05,640 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:08,381 INFO L93 Difference]: Finished difference Result 25294 states and 40040 transitions. [2020-10-28 01:12:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:12:08,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 01:12:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:08,466 INFO L225 Difference]: With dead ends: 25294 [2020-10-28 01:12:08,467 INFO L226 Difference]: Without dead ends: 14027 [2020-10-28 01:12:08,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:12:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14027 states. [2020-10-28 01:12:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14027 to 10438. [2020-10-28 01:12:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10438 states. [2020-10-28 01:12:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10438 states to 10438 states and 16424 transitions. [2020-10-28 01:12:09,753 INFO L78 Accepts]: Start accepts. Automaton has 10438 states and 16424 transitions. Word has length 124 [2020-10-28 01:12:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 10438 states and 16424 transitions. [2020-10-28 01:12:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10438 states and 16424 transitions. [2020-10-28 01:12:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 01:12:09,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:09,794 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:09,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:12:09,795 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash -777394609, now seen corresponding path program 1 times [2020-10-28 01:12:09,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:09,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758435444] [2020-10-28 01:12:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 01:12:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,584 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:12:11,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:12:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:12:11,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:12:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:12:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:12:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 01:12:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 01:12:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:12:11,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758435444] [2020-10-28 01:12:11,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:12:11,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:12:11,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162890072] [2020-10-28 01:12:11,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:12:11,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:12:11,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:12:11,814 INFO L87 Difference]: Start difference. First operand 10438 states and 16424 transitions. Second operand 8 states. [2020-10-28 01:12:11,974 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:12:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:15,377 INFO L93 Difference]: Finished difference Result 31068 states and 48580 transitions. [2020-10-28 01:12:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:12:15,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 01:12:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:15,464 INFO L225 Difference]: With dead ends: 31068 [2020-10-28 01:12:15,464 INFO L226 Difference]: Without dead ends: 20639 [2020-10-28 01:12:15,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:12:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20639 states. [2020-10-28 01:12:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20639 to 17056. [2020-10-28 01:12:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17056 states. [2020-10-28 01:12:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17056 states to 17056 states and 26743 transitions. [2020-10-28 01:12:18,107 INFO L78 Accepts]: Start accepts. Automaton has 17056 states and 26743 transitions. Word has length 124 [2020-10-28 01:12:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:18,108 INFO L481 AbstractCegarLoop]: Abstraction has 17056 states and 26743 transitions. [2020-10-28 01:12:18,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17056 states and 26743 transitions. [2020-10-28 01:12:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 01:12:18,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:18,150 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:18,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:12:18,150 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash 626355721, now seen corresponding path program 1 times [2020-10-28 01:12:18,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:18,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380706228] [2020-10-28 01:12:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3857 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 01:12:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,187 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 01:12:22,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:12:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 01:12:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:22,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:12:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 01:12:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 01:12:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:22,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:22,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 01:12:22,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380706228] [2020-10-28 01:12:22,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:12:22,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:12:22,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451435896] [2020-10-28 01:12:22,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:12:22,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:12:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:12:22,406 INFO L87 Difference]: Start difference. First operand 17056 states and 26743 transitions. Second operand 8 states. [2020-10-28 01:12:22,665 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:26,621 INFO L93 Difference]: Finished difference Result 37824 states and 60920 transitions. [2020-10-28 01:12:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 01:12:26,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-28 01:12:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:26,701 INFO L225 Difference]: With dead ends: 37824 [2020-10-28 01:12:26,701 INFO L226 Difference]: Without dead ends: 20934 [2020-10-28 01:12:26,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:12:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20934 states. [2020-10-28 01:12:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20934 to 16390. [2020-10-28 01:12:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16390 states. [2020-10-28 01:12:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16390 states to 16390 states and 24773 transitions. [2020-10-28 01:12:28,633 INFO L78 Accepts]: Start accepts. Automaton has 16390 states and 24773 transitions. Word has length 133 [2020-10-28 01:12:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:28,634 INFO L481 AbstractCegarLoop]: Abstraction has 16390 states and 24773 transitions. [2020-10-28 01:12:28,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16390 states and 24773 transitions. [2020-10-28 01:12:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 01:12:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:28,665 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:28,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:12:28,665 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash -329390907, now seen corresponding path program 1 times [2020-10-28 01:12:28,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:28,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803660188] [2020-10-28 01:12:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2725 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 01:12:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 01:12:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,664 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 01:12:31,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:12:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:12:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 01:12:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:12:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:12:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:12:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:12:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 01:12:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 01:12:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 01:12:31,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803660188] [2020-10-28 01:12:31,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:12:31,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 01:12:31,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051812366] [2020-10-28 01:12:31,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:12:31,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:31,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:12:31,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:12:31,960 INFO L87 Difference]: Start difference. First operand 16390 states and 24773 transitions. Second operand 10 states. [2020-10-28 01:12:32,144 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:12:33,191 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:38,142 INFO L93 Difference]: Finished difference Result 43082 states and 66293 transitions. [2020-10-28 01:12:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 01:12:38,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 01:12:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:38,233 INFO L225 Difference]: With dead ends: 43082 [2020-10-28 01:12:38,233 INFO L226 Difference]: Without dead ends: 28190 [2020-10-28 01:12:38,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:12:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28190 states. [2020-10-28 01:12:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28190 to 19443. [2020-10-28 01:12:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19443 states. [2020-10-28 01:12:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19443 states to 19443 states and 29647 transitions. [2020-10-28 01:12:40,204 INFO L78 Accepts]: Start accepts. Automaton has 19443 states and 29647 transitions. Word has length 134 [2020-10-28 01:12:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:40,205 INFO L481 AbstractCegarLoop]: Abstraction has 19443 states and 29647 transitions. [2020-10-28 01:12:40,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 01:12:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 19443 states and 29647 transitions. [2020-10-28 01:12:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 01:12:40,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:40,244 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:40,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 01:12:40,244 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1317131564, now seen corresponding path program 1 times [2020-10-28 01:12:40,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:40,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145870106] [2020-10-28 01:12:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 01:12:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:12:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 01:12:45,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:12:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 01:12:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 01:12:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,460 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:45,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:12:45,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 01:12:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:45,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 01:12:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:12:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 01:12:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:12:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 01:12:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 01:12:45,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145870106] [2020-10-28 01:12:45,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:12:45,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:12:45,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540444493] [2020-10-28 01:12:45,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:12:45,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:45,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:12:45,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:12:45,765 INFO L87 Difference]: Start difference. First operand 19443 states and 29647 transitions. Second operand 9 states. [2020-10-28 01:12:45,949 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:12:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:54,208 INFO L93 Difference]: Finished difference Result 75260 states and 118797 transitions. [2020-10-28 01:12:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 01:12:54,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2020-10-28 01:12:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:54,407 INFO L225 Difference]: With dead ends: 75260 [2020-10-28 01:12:54,407 INFO L226 Difference]: Without dead ends: 55975 [2020-10-28 01:12:54,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:12:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55975 states. [2020-10-28 01:12:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55975 to 40038. [2020-10-28 01:12:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40038 states. [2020-10-28 01:12:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40038 states to 40038 states and 61177 transitions. [2020-10-28 01:12:58,612 INFO L78 Accepts]: Start accepts. Automaton has 40038 states and 61177 transitions. Word has length 149 [2020-10-28 01:12:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:58,613 INFO L481 AbstractCegarLoop]: Abstraction has 40038 states and 61177 transitions. [2020-10-28 01:12:58,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:12:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40038 states and 61177 transitions. [2020-10-28 01:12:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 01:12:58,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:58,708 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:58,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 01:12:58,708 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1377404166, now seen corresponding path program 1 times [2020-10-28 01:12:58,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:58,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763812738] [2020-10-28 01:12:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 01:12:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,797 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 01:12:59,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 01:12:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 01:12:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:12:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:12:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:59,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:12:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:12:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:59,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 01:12:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:59,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:59,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:59,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 01:13:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 01:13:00,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763812738] [2020-10-28 01:13:00,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:13:00,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 01:13:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073829851] [2020-10-28 01:13:00,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:13:00,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:13:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:13:00,031 INFO L87 Difference]: Start difference. First operand 40038 states and 61177 transitions. Second operand 8 states. [2020-10-28 01:13:00,328 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:05,594 INFO L93 Difference]: Finished difference Result 74521 states and 113210 transitions. [2020-10-28 01:13:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 01:13:05,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-10-28 01:13:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:05,714 INFO L225 Difference]: With dead ends: 74521 [2020-10-28 01:13:05,714 INFO L226 Difference]: Without dead ends: 34453 [2020-10-28 01:13:05,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:13:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34453 states. [2020-10-28 01:13:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34453 to 32525. [2020-10-28 01:13:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32525 states. [2020-10-28 01:13:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32525 states to 32525 states and 47935 transitions. [2020-10-28 01:13:09,233 INFO L78 Accepts]: Start accepts. Automaton has 32525 states and 47935 transitions. Word has length 149 [2020-10-28 01:13:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:13:09,233 INFO L481 AbstractCegarLoop]: Abstraction has 32525 states and 47935 transitions. [2020-10-28 01:13:09,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:13:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32525 states and 47935 transitions. [2020-10-28 01:13:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 01:13:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:13:09,297 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:13:09,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 01:13:09,298 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:13:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:13:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash -143891232, now seen corresponding path program 1 times [2020-10-28 01:13:09,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:13:09,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246029335] [2020-10-28 01:13:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:13:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4083 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 01:13:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,567 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:13:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:13:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:13:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:13:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:13:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 01:13:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:13:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:13:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:13:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:13:13,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:13:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 01:13:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 01:13:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:13,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:13,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:13,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 01:13:13,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246029335] [2020-10-28 01:13:13,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:13:13,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:13:13,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575756073] [2020-10-28 01:13:13,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:13:13,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:13:13,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:13:13,851 INFO L87 Difference]: Start difference. First operand 32525 states and 47935 transitions. Second operand 9 states. [2020-10-28 01:13:14,148 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:22,784 INFO L93 Difference]: Finished difference Result 91995 states and 137334 transitions. [2020-10-28 01:13:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 01:13:22,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-10-28 01:13:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:23,051 INFO L225 Difference]: With dead ends: 91995 [2020-10-28 01:13:23,051 INFO L226 Difference]: Without dead ends: 59904 [2020-10-28 01:13:23,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:13:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59904 states. [2020-10-28 01:13:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59904 to 52961. [2020-10-28 01:13:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52961 states. [2020-10-28 01:13:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52961 states to 52961 states and 77587 transitions. [2020-10-28 01:13:29,192 INFO L78 Accepts]: Start accepts. Automaton has 52961 states and 77587 transitions. Word has length 162 [2020-10-28 01:13:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:13:29,193 INFO L481 AbstractCegarLoop]: Abstraction has 52961 states and 77587 transitions. [2020-10-28 01:13:29,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:13:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 52961 states and 77587 transitions. [2020-10-28 01:13:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 01:13:29,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:13:29,344 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:13:29,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 01:13:29,344 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:13:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:13:29,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1184175081, now seen corresponding path program 1 times [2020-10-28 01:13:29,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:13:29,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670518886] [2020-10-28 01:13:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:13:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 01:13:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 01:13:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,555 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:13:34,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:13:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:13:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:13:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 01:13:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:13:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:13:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:13:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:13:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:13:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:13:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:13:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 01:13:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 01:13:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 01:13:34,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670518886] [2020-10-28 01:13:34,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:13:34,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:13:34,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433784096] [2020-10-28 01:13:34,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:13:34,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:13:34,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:13:34,904 INFO L87 Difference]: Start difference. First operand 52961 states and 77587 transitions. Second operand 11 states. [2020-10-28 01:13:35,246 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:13:35,412 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:35,586 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 01:13:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:43,824 INFO L93 Difference]: Finished difference Result 88880 states and 129488 transitions. [2020-10-28 01:13:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 01:13:43,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-10-28 01:13:43,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:43,940 INFO L225 Difference]: With dead ends: 88880 [2020-10-28 01:13:43,940 INFO L226 Difference]: Without dead ends: 36499 [2020-10-28 01:13:44,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=523, Invalid=1733, Unknown=0, NotChecked=0, Total=2256 [2020-10-28 01:13:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36499 states.