/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/eca-rers2012/Problem03_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:43:38,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:43:38,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:43:38,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:43:38,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:43:38,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:43:38,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:43:38,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:43:38,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:43:38,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:43:38,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:43:38,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:43:38,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:43:38,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:43:38,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:43:38,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:43:38,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:43:38,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:43:38,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:43:38,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:43:38,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:43:38,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:43:38,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:43:38,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:43:38,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:43:38,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:43:38,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:43:38,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:43:38,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:43:38,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:43:38,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:43:38,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:43:38,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:43:38,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:43:38,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:43:38,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:43:38,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:43:38,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:43:38,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:43:38,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:43:38,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:43:38,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:43:38,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:43:38,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:43:38,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:43:38,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:43:38,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:43:38,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:43:38,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:43:38,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:43:38,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:43:38,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:43:38,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:43:38,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:43:38,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:43:38,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:43:38,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:43:38,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:43:38,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:43:38,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:43:38,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:43:38,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:43:38,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:43:38,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:43:38,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:43:38,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:43:38,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:43:38,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:43:38,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:43:38,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:43:38,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:43:38,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:43:39,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:43:39,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:43:39,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:43:39,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:43:39,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:43:39,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-27 15:43:39,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b7599a4/034c1b2cea714e5ab6c71503cdd2ab5a/FLAG604a3b6a6 [2020-10-27 15:43:40,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:43:40,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-27 15:43:40,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b7599a4/034c1b2cea714e5ab6c71503cdd2ab5a/FLAG604a3b6a6 [2020-10-27 15:43:40,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b7599a4/034c1b2cea714e5ab6c71503cdd2ab5a [2020-10-27 15:43:40,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:43:40,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:43:40,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:40,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:43:40,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:43:40,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:40" (1/1) ... [2020-10-27 15:43:40,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132a9d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:40, skipping insertion in model container [2020-10-27 15:43:40,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:40" (1/1) ... [2020-10-27 15:43:40,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:43:40,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:43:41,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:41,366 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:43:41,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:41,648 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:43:41,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41 WrapperNode [2020-10-27 15:43:41,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:41,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:43:41,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:43:41,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:43:41,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... [2020-10-27 15:43:41,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:43:41,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:43:41,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:43:41,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:43:41,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:43:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:43:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:43:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:43:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:43:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:43:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:43:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:43:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:43:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:43:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:43:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:43:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:43:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:43:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:43:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:43:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:43:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:43:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:43:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:43:43,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:43:43,998 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:43:44,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:44 BoogieIcfgContainer [2020-10-27 15:43:44,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:43:44,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:43:44,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:43:44,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:43:44,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:43:40" (1/3) ... [2020-10-27 15:43:44,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196f7dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:44, skipping insertion in model container [2020-10-27 15:43:44,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:41" (2/3) ... [2020-10-27 15:43:44,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196f7dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:44, skipping insertion in model container [2020-10-27 15:43:44,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:44" (3/3) ... [2020-10-27 15:43:44,011 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label26.c [2020-10-27 15:43:44,025 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:43:44,031 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:43:44,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:43:44,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:43:44,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:43:44,078 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:43:44,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:43:44,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:43:44,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:43:44,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:43:44,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:43:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:43:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 15:43:44,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:44,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:44,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1608130892, now seen corresponding path program 1 times [2020-10-27 15:43:44,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:44,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237328487] [2020-10-27 15:43:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:49,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:49,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 15:43:49,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:49,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4520 [2020-10-27 15:43:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:43:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:43:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 15:43:49,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 15:43:49,628 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 15:43:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:43:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:49,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237328487] [2020-10-27 15:43:49,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:43:49,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:43:49,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741958293] [2020-10-27 15:43:49,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:43:49,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:43:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:43:49,825 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 15:43:50,072 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:53,594 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-27 15:43:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:53,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-27 15:43:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:53,617 INFO L225 Difference]: With dead ends: 863 [2020-10-27 15:43:53,618 INFO L226 Difference]: Without dead ends: 484 [2020-10-27 15:43:53,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-27 15:43:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-27 15:43:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-27 15:43:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-27 15:43:53,746 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 163 [2020-10-27 15:43:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:53,747 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-27 15:43:53,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:43:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-27 15:43:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 15:43:53,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:53,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:53,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:43:53,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1742190307, now seen corresponding path program 1 times [2020-10-27 15:43:53,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:53,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957860822] [2020-10-27 15:43:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 15:43:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:43:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2984 [2020-10-27 15:43:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:43:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 15:43:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:57,293 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:57,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:57,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:43:57,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:43:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:57,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:43:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:43:57,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:43:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:57,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957860822] [2020-10-27 15:43:57,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:57,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:57,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942754375] [2020-10-27 15:43:57,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:57,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:57,558 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-27 15:43:57,857 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:01,433 INFO L93 Difference]: Finished difference Result 1362 states and 2201 transitions. [2020-10-27 15:44:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:01,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-27 15:44:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:01,442 INFO L225 Difference]: With dead ends: 1362 [2020-10-27 15:44:01,442 INFO L226 Difference]: Without dead ends: 902 [2020-10-27 15:44:01,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:01,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-27 15:44:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 897. [2020-10-27 15:44:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-27 15:44:01,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1337 transitions. [2020-10-27 15:44:01,500 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1337 transitions. Word has length 172 [2020-10-27 15:44:01,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:01,501 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1337 transitions. [2020-10-27 15:44:01,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:01,501 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1337 transitions. [2020-10-27 15:44:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 15:44:01,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:01,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:01,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:44:01,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:01,508 INFO L82 PathProgramCache]: Analyzing trace with hash -186142553, now seen corresponding path program 1 times [2020-10-27 15:44:01,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:01,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99578307] [2020-10-27 15:44:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 15:44:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:44:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4225 [2020-10-27 15:44:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:44:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 15:44:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:06,175 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:06,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:44:06,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:06,334 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:44:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:06,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 15:44:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:44:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:44:06,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99578307] [2020-10-27 15:44:06,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:06,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:06,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286660798] [2020-10-27 15:44:06,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:06,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:06,474 INFO L87 Difference]: Start difference. First operand 897 states and 1337 transitions. Second operand 5 states. [2020-10-27 15:44:06,721 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:09,900 INFO L93 Difference]: Finished difference Result 2628 states and 3981 transitions. [2020-10-27 15:44:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:09,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-27 15:44:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:09,919 INFO L225 Difference]: With dead ends: 2628 [2020-10-27 15:44:09,920 INFO L226 Difference]: Without dead ends: 1737 [2020-10-27 15:44:09,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-10-27 15:44:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1733. [2020-10-27 15:44:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-27 15:44:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2298 transitions. [2020-10-27 15:44:10,024 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2298 transitions. Word has length 174 [2020-10-27 15:44:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:10,024 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2298 transitions. [2020-10-27 15:44:10,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2298 transitions. [2020-10-27 15:44:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 15:44:10,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:10,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:10,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:44:10,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash 603745846, now seen corresponding path program 1 times [2020-10-27 15:44:10,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:10,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813485822] [2020-10-27 15:44:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:15,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-27 15:44:15,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:44:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 15:44:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:44:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:44:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:15,431 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:15,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:15,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:15,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:44:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:15,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:44:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:44:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:44:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:15,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:44:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:44:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:44:15,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813485822] [2020-10-27 15:44:15,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147264646] [2020-10-27 15:44:15,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:15,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:15,874 INFO L87 Difference]: Start difference. First operand 1733 states and 2298 transitions. Second operand 7 states. [2020-10-27 15:44:16,346 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:17,908 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 15:44:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:20,708 INFO L93 Difference]: Finished difference Result 4427 states and 6246 transitions. [2020-10-27 15:44:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:44:20,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-27 15:44:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:20,735 INFO L225 Difference]: With dead ends: 4427 [2020-10-27 15:44:20,735 INFO L226 Difference]: Without dead ends: 2700 [2020-10-27 15:44:20,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:44:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-10-27 15:44:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2613. [2020-10-27 15:44:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-27 15:44:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3396 transitions. [2020-10-27 15:44:20,908 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3396 transitions. Word has length 211 [2020-10-27 15:44:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:20,908 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3396 transitions. [2020-10-27 15:44:20,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:44:20,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3396 transitions. [2020-10-27 15:44:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 15:44:20,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:20,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:20,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:44:20,919 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:20,919 INFO L82 PathProgramCache]: Analyzing trace with hash -826924569, now seen corresponding path program 1 times [2020-10-27 15:44:20,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:20,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654504108] [2020-10-27 15:44:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 15:44:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 15:44:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:23,565 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:23,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:23,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:44:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 15:44:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 15:44:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:44:23,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654504108] [2020-10-27 15:44:23,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:23,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:23,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770800081] [2020-10-27 15:44:23,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:23,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:23,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:23,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:23,939 INFO L87 Difference]: Start difference. First operand 2613 states and 3396 transitions. Second operand 5 states. [2020-10-27 15:44:24,322 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:27,709 INFO L93 Difference]: Finished difference Result 6922 states and 9218 transitions. [2020-10-27 15:44:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:27,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 15:44:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:27,738 INFO L225 Difference]: With dead ends: 6922 [2020-10-27 15:44:27,738 INFO L226 Difference]: Without dead ends: 4315 [2020-10-27 15:44:27,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-10-27 15:44:27,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4295. [2020-10-27 15:44:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2020-10-27 15:44:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5670 transitions. [2020-10-27 15:44:27,905 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5670 transitions. Word has length 214 [2020-10-27 15:44:27,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:27,905 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 5670 transitions. [2020-10-27 15:44:27,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5670 transitions. [2020-10-27 15:44:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 15:44:27,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:27,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:27,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:44:27,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 47406489, now seen corresponding path program 1 times [2020-10-27 15:44:27,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:27,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272653614] [2020-10-27 15:44:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-27 15:44:33,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:44:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 15:44:33,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 15:44:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:44:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,309 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:33,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:33,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:44:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 15:44:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:44:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:44:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:44:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 15:44:33,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272653614] [2020-10-27 15:44:33,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:33,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:33,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633693062] [2020-10-27 15:44:33,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:33,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:33,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:33,800 INFO L87 Difference]: Start difference. First operand 4295 states and 5670 transitions. Second operand 7 states. [2020-10-27 15:44:34,335 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:44:35,656 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:38,129 INFO L93 Difference]: Finished difference Result 11952 states and 17333 transitions. [2020-10-27 15:44:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:44:38,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-27 15:44:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:38,184 INFO L225 Difference]: With dead ends: 11952 [2020-10-27 15:44:38,184 INFO L226 Difference]: Without dead ends: 7663 [2020-10-27 15:44:38,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:44:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2020-10-27 15:44:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 7502. [2020-10-27 15:44:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7502 states. [2020-10-27 15:44:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7502 states to 7502 states and 9756 transitions. [2020-10-27 15:44:38,562 INFO L78 Accepts]: Start accepts. Automaton has 7502 states and 9756 transitions. Word has length 221 [2020-10-27 15:44:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:38,563 INFO L481 AbstractCegarLoop]: Abstraction has 7502 states and 9756 transitions. [2020-10-27 15:44:38,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:44:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7502 states and 9756 transitions. [2020-10-27 15:44:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 15:44:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:38,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:38,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:44:38,587 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:38,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:38,588 INFO L82 PathProgramCache]: Analyzing trace with hash 200142120, now seen corresponding path program 1 times [2020-10-27 15:44:38,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:38,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661839505] [2020-10-27 15:44:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:42,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 15:44:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:44:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3857 [2020-10-27 15:44:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 15:44:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:44:42,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:42,778 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:44:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:44:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 15:44:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:44:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:44:43,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661839505] [2020-10-27 15:44:43,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:43,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:43,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993886583] [2020-10-27 15:44:43,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:43,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:43,131 INFO L87 Difference]: Start difference. First operand 7502 states and 9756 transitions. Second operand 7 states. [2020-10-27 15:44:43,388 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:43,824 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:47,471 INFO L93 Difference]: Finished difference Result 18319 states and 25186 transitions. [2020-10-27 15:44:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:44:47,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-27 15:44:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:47,527 INFO L225 Difference]: With dead ends: 18319 [2020-10-27 15:44:47,527 INFO L226 Difference]: Without dead ends: 10823 [2020-10-27 15:44:47,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:44:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10823 states. [2020-10-27 15:44:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10823 to 10744. [2020-10-27 15:44:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10744 states. [2020-10-27 15:44:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 14109 transitions. [2020-10-27 15:44:47,911 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 14109 transitions. Word has length 238 [2020-10-27 15:44:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:47,911 INFO L481 AbstractCegarLoop]: Abstraction has 10744 states and 14109 transitions. [2020-10-27 15:44:47,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:44:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 14109 transitions. [2020-10-27 15:44:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-27 15:44:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:47,950 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:47,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:44:47,950 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash 749462400, now seen corresponding path program 1 times [2020-10-27 15:44:47,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:47,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119153527] [2020-10-27 15:44:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:49,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-27 15:44:53,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 15:44:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 15:44:53,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 15:44:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:44:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,360 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:53,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:44:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:53,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:44:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:53,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:44:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:44:53,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 15:44:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:44:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:44:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 15:44:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 15:44:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:53,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:53,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:44:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 15:44:53,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119153527] [2020-10-27 15:44:53,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:53,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:44:53,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246963746] [2020-10-27 15:44:53,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:44:53,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:53,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:44:53,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:44:53,898 INFO L87 Difference]: Start difference. First operand 10744 states and 14109 transitions. Second operand 8 states. [2020-10-27 15:44:54,185 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:56,320 INFO L93 Difference]: Finished difference Result 20779 states and 27413 transitions. [2020-10-27 15:44:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:56,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2020-10-27 15:44:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:56,358 INFO L225 Difference]: With dead ends: 20779 [2020-10-27 15:44:56,358 INFO L226 Difference]: Without dead ends: 10041 [2020-10-27 15:44:56,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:44:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10041 states. [2020-10-27 15:44:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10041 to 10035. [2020-10-27 15:44:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10035 states. [2020-10-27 15:44:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10035 states to 10035 states and 12893 transitions. [2020-10-27 15:44:56,776 INFO L78 Accepts]: Start accepts. Automaton has 10035 states and 12893 transitions. Word has length 263 [2020-10-27 15:44:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:56,777 INFO L481 AbstractCegarLoop]: Abstraction has 10035 states and 12893 transitions. [2020-10-27 15:44:56,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:44:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 10035 states and 12893 transitions. [2020-10-27 15:44:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 15:44:56,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:56,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:56,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:44:56,808 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash -876037386, now seen corresponding path program 1 times [2020-10-27 15:44:56,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:56,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205613968] [2020-10-27 15:44:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:57,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:57,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 15:44:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 15:44:57,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:44:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:44:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:57,766 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:57,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:57,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 15:44:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:44:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 15:44:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:44:58,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205613968] [2020-10-27 15:44:58,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:58,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:58,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237987139] [2020-10-27 15:44:58,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:58,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:58,478 INFO L87 Difference]: Start difference. First operand 10035 states and 12893 transitions. Second operand 7 states. [2020-10-27 15:44:59,110 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:59,632 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:45:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:03,191 INFO L93 Difference]: Finished difference Result 23832 states and 33484 transitions. [2020-10-27 15:45:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:45:03,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-27 15:45:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:03,264 INFO L225 Difference]: With dead ends: 23832 [2020-10-27 15:45:03,265 INFO L226 Difference]: Without dead ends: 13803 [2020-10-27 15:45:03,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:45:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2020-10-27 15:45:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 13211. [2020-10-27 15:45:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13211 states. [2020-10-27 15:45:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 16817 transitions. [2020-10-27 15:45:03,771 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 16817 transitions. Word has length 266 [2020-10-27 15:45:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:03,772 INFO L481 AbstractCegarLoop]: Abstraction has 13211 states and 16817 transitions. [2020-10-27 15:45:03,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 16817 transitions. [2020-10-27 15:45:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 15:45:03,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:03,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:03,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:45:03,814 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash -457031553, now seen corresponding path program 1 times [2020-10-27 15:45:03,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:03,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359851251] [2020-10-27 15:45:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:05,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:45:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:45:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 15:45:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:06,105 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:06,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:06,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:06,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:45:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:45:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:45:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:45:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 15:45:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:45:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 108 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 15:45:06,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359851251] [2020-10-27 15:45:06,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:06,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:06,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146119453] [2020-10-27 15:45:06,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:06,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:06,729 INFO L87 Difference]: Start difference. First operand 13211 states and 16817 transitions. Second operand 7 states. [2020-10-27 15:45:06,987 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:45:07,579 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:10,612 INFO L93 Difference]: Finished difference Result 33151 states and 44059 transitions. [2020-10-27 15:45:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:10,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-27 15:45:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:10,679 INFO L225 Difference]: With dead ends: 33151 [2020-10-27 15:45:10,679 INFO L226 Difference]: Without dead ends: 19946 [2020-10-27 15:45:10,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:10,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19946 states. [2020-10-27 15:45:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19946 to 19808. [2020-10-27 15:45:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19808 states. [2020-10-27 15:45:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19808 states to 19808 states and 25282 transitions. [2020-10-27 15:45:11,398 INFO L78 Accepts]: Start accepts. Automaton has 19808 states and 25282 transitions. Word has length 277 [2020-10-27 15:45:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:11,398 INFO L481 AbstractCegarLoop]: Abstraction has 19808 states and 25282 transitions. [2020-10-27 15:45:11,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 19808 states and 25282 transitions. [2020-10-27 15:45:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 15:45:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:11,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:11,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:45:11,449 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:11,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1886475890, now seen corresponding path program 1 times [2020-10-27 15:45:11,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:11,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705193127] [2020-10-27 15:45:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 15:45:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:45:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,492 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:12,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:12,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:45:12,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:45:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:45:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 15:45:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 15:45:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:45:13,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705193127] [2020-10-27 15:45:13,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:13,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:13,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924527591] [2020-10-27 15:45:13,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:13,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:13,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:13,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:13,254 INFO L87 Difference]: Start difference. First operand 19808 states and 25282 transitions. Second operand 7 states. [2020-10-27 15:45:13,622 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 15:45:14,161 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:19,409 INFO L93 Difference]: Finished difference Result 46159 states and 62415 transitions. [2020-10-27 15:45:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:19,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-27 15:45:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:19,534 INFO L225 Difference]: With dead ends: 46159 [2020-10-27 15:45:19,534 INFO L226 Difference]: Without dead ends: 26357 [2020-10-27 15:45:19,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26357 states. [2020-10-27 15:45:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26357 to 25860. [2020-10-27 15:45:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25860 states. [2020-10-27 15:45:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25860 states to 25860 states and 32680 transitions. [2020-10-27 15:45:20,619 INFO L78 Accepts]: Start accepts. Automaton has 25860 states and 32680 transitions. Word has length 280 [2020-10-27 15:45:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:20,619 INFO L481 AbstractCegarLoop]: Abstraction has 25860 states and 32680 transitions. [2020-10-27 15:45:20,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 25860 states and 32680 transitions. [2020-10-27 15:45:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 15:45:20,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:20,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:20,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:45:20,667 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash -734260083, now seen corresponding path program 1 times [2020-10-27 15:45:20,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:20,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059300613] [2020-10-27 15:45:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4038 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 15:45:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:25,173 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:25,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:25,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:25,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:45:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:25,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 15:45:25,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 15:45:25,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 15:45:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:45:25,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059300613] [2020-10-27 15:45:25,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:25,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:45:25,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416083607] [2020-10-27 15:45:25,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:45:25,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:25,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:45:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:45:25,627 INFO L87 Difference]: Start difference. First operand 25860 states and 32680 transitions. Second operand 5 states. [2020-10-27 15:45:26,564 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:29,640 INFO L93 Difference]: Finished difference Result 59874 states and 76942 transitions. [2020-10-27 15:45:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:45:29,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-27 15:45:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:29,765 INFO L225 Difference]: With dead ends: 59874 [2020-10-27 15:45:29,765 INFO L226 Difference]: Without dead ends: 34442 [2020-10-27 15:45:29,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:45:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34442 states. [2020-10-27 15:45:30,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34442 to 34417. [2020-10-27 15:45:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34417 states. [2020-10-27 15:45:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34417 states to 34417 states and 44446 transitions. [2020-10-27 15:45:31,094 INFO L78 Accepts]: Start accepts. Automaton has 34417 states and 44446 transitions. Word has length 301 [2020-10-27 15:45:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:31,095 INFO L481 AbstractCegarLoop]: Abstraction has 34417 states and 44446 transitions. [2020-10-27 15:45:31,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:45:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 34417 states and 44446 transitions. [2020-10-27 15:45:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 15:45:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:31,157 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:31,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:45:31,158 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2061829790, now seen corresponding path program 1 times [2020-10-27 15:45:31,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:31,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561588700] [2020-10-27 15:45:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 15:45:35,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:45:35,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-27 15:45:35,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:35,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 15:45:35,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:45:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,764 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:45:35,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:45:36,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 15:45:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 15:45:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 15:45:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 15:45:36,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:45:36,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561588700] [2020-10-27 15:45:36,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:36,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453638034] [2020-10-27 15:45:36,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:36,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:36,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:36,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:36,422 INFO L87 Difference]: Start difference. First operand 34417 states and 44446 transitions. Second operand 7 states. [2020-10-27 15:45:37,472 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:37,764 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:42,626 INFO L93 Difference]: Finished difference Result 98387 states and 145548 transitions. [2020-10-27 15:45:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:42,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-27 15:45:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:43,023 INFO L225 Difference]: With dead ends: 98387 [2020-10-27 15:45:43,024 INFO L226 Difference]: Without dead ends: 65105 [2020-10-27 15:45:43,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65105 states. [2020-10-27 15:45:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65105 to 61311. [2020-10-27 15:45:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61311 states. [2020-10-27 15:45:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61311 states to 61311 states and 77471 transitions. [2020-10-27 15:45:45,922 INFO L78 Accepts]: Start accepts. Automaton has 61311 states and 77471 transitions. Word has length 323 [2020-10-27 15:45:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:45,923 INFO L481 AbstractCegarLoop]: Abstraction has 61311 states and 77471 transitions. [2020-10-27 15:45:45,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 61311 states and 77471 transitions. [2020-10-27 15:45:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-27 15:45:46,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:46,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:46,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:45:46,175 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:46,176 INFO L82 PathProgramCache]: Analyzing trace with hash 528645222, now seen corresponding path program 1 times [2020-10-27 15:45:46,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:46,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694520507] [2020-10-27 15:45:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:48,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:45:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:48,839 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:48,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:48,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:48,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:45:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:45:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 15:45:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:45:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:45:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 155 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 15:45:49,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694520507] [2020-10-27 15:45:49,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:49,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:49,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201964135] [2020-10-27 15:45:49,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:49,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:49,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:49,402 INFO L87 Difference]: Start difference. First operand 61311 states and 77471 transitions. Second operand 7 states. [2020-10-27 15:45:49,656 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:52,245 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:54,163 INFO L93 Difference]: Finished difference Result 122558 states and 158026 transitions. [2020-10-27 15:45:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:45:54,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-27 15:45:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:54,355 INFO L225 Difference]: With dead ends: 122558 [2020-10-27 15:45:54,355 INFO L226 Difference]: Without dead ends: 62151 [2020-10-27 15:45:54,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62151 states. [2020-10-27 15:45:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62151 to 61694. [2020-10-27 15:45:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61694 states. [2020-10-27 15:45:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61694 states to 61694 states and 77384 transitions. [2020-10-27 15:45:57,048 INFO L78 Accepts]: Start accepts. Automaton has 61694 states and 77384 transitions. Word has length 324 [2020-10-27 15:45:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:57,048 INFO L481 AbstractCegarLoop]: Abstraction has 61694 states and 77384 transitions. [2020-10-27 15:45:57,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 61694 states and 77384 transitions. [2020-10-27 15:45:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-27 15:45:57,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:57,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:57,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:45:57,147 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:57,148 INFO L82 PathProgramCache]: Analyzing trace with hash -578660618, now seen corresponding path program 1 times [2020-10-27 15:45:57,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:57,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485541803] [2020-10-27 15:45:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4068 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 15:46:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:01,629 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:46:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:46:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:46:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 15:46:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:46:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:46:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:02,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:46:02,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 15:46:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 15:46:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:02,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:02,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:46:02,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 15:46:02,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:46:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 212 proven. 100 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 15:46:02,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485541803] [2020-10-27 15:46:02,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:02,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:46:02,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850418100] [2020-10-27 15:46:02,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:46:02,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:46:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:46:02,732 INFO L87 Difference]: Start difference. First operand 61694 states and 77384 transitions. Second operand 8 states. [2020-10-27 15:46:03,307 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:46:05,025 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:46:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:11,268 INFO L93 Difference]: Finished difference Result 172304 states and 228196 transitions. [2020-10-27 15:46:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:46:11,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-10-27 15:46:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:11,824 INFO L225 Difference]: With dead ends: 172304 [2020-10-27 15:46:11,825 INFO L226 Difference]: Without dead ends: 111522 [2020-10-27 15:46:11,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:46:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111522 states. [2020-10-27 15:46:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111522 to 109717. [2020-10-27 15:46:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109717 states. [2020-10-27 15:46:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109717 states to 109717 states and 137722 transitions. [2020-10-27 15:46:15,447 INFO L78 Accepts]: Start accepts. Automaton has 109717 states and 137722 transitions. Word has length 343 [2020-10-27 15:46:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:15,448 INFO L481 AbstractCegarLoop]: Abstraction has 109717 states and 137722 transitions. [2020-10-27 15:46:15,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:46:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 109717 states and 137722 transitions. [2020-10-27 15:46:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-27 15:46:15,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:15,531 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:46:15,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:46:15,531 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1048805992, now seen corresponding path program 1 times [2020-10-27 15:46:15,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:15,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832320202] [2020-10-27 15:46:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:46:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:20,935 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:21,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:46:21,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:46:21,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:46:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 15:46:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:21,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 15:46:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:46:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 15:46:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 15:46:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 15:46:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832320202] [2020-10-27 15:46:21,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:21,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:21,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23983221] [2020-10-27 15:46:21,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:21,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:21,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:21,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:21,611 INFO L87 Difference]: Start difference. First operand 109717 states and 137722 transitions. Second operand 7 states. [2020-10-27 15:46:22,304 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:46:22,945 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:46:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:29,557 INFO L93 Difference]: Finished difference Result 224699 states and 296065 transitions. [2020-10-27 15:46:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:46:29,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-27 15:46:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:30,017 INFO L225 Difference]: With dead ends: 224699 [2020-10-27 15:46:30,017 INFO L226 Difference]: Without dead ends: 115902 [2020-10-27 15:46:30,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:46:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115902 states. [2020-10-27 15:46:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115902 to 112500. [2020-10-27 15:46:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112500 states. [2020-10-27 15:46:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112500 states to 112500 states and 139770 transitions. [2020-10-27 15:46:33,728 INFO L78 Accepts]: Start accepts. Automaton has 112500 states and 139770 transitions. Word has length 352 [2020-10-27 15:46:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:33,729 INFO L481 AbstractCegarLoop]: Abstraction has 112500 states and 139770 transitions. [2020-10-27 15:46:33,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 112500 states and 139770 transitions. [2020-10-27 15:46:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 15:46:33,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:33,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:46:33,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:46:33,843 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:33,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1675602390, now seen corresponding path program 1 times [2020-10-27 15:46:33,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:33,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831148564] [2020-10-27 15:46:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:35,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:35,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-27 15:46:35,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-27 15:46:35,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:46:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:46:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 15:46:35,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:35,455 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:46:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:46:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:35,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:46:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:35,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 15:46:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:46:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 15:46:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:36,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:46:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 182 proven. 99 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-27 15:46:36,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831148564] [2020-10-27 15:46:36,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:36,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:36,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756603748] [2020-10-27 15:46:36,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:36,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:36,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:36,313 INFO L87 Difference]: Start difference. First operand 112500 states and 139770 transitions. Second operand 7 states. [2020-10-27 15:46:36,564 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:38,399 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 15:46:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:41,558 INFO L93 Difference]: Finished difference Result 233000 states and 289431 transitions. [2020-10-27 15:46:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:46:41,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-27 15:46:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:42,183 INFO L225 Difference]: With dead ends: 233000 [2020-10-27 15:46:42,183 INFO L226 Difference]: Without dead ends: 122065 [2020-10-27 15:46:42,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:46:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122065 states. [2020-10-27 15:46:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122065 to 121764. [2020-10-27 15:46:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121764 states. [2020-10-27 15:46:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121764 states to 121764 states and 150865 transitions. [2020-10-27 15:46:45,294 INFO L78 Accepts]: Start accepts. Automaton has 121764 states and 150865 transitions. Word has length 354 [2020-10-27 15:46:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:45,295 INFO L481 AbstractCegarLoop]: Abstraction has 121764 states and 150865 transitions. [2020-10-27 15:46:45,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 121764 states and 150865 transitions. [2020-10-27 15:46:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-27 15:46:45,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:45,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:46:45,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:46:45,392 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1327267399, now seen corresponding path program 1 times [2020-10-27 15:46:45,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:45,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379201065] [2020-10-27 15:46:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 15:46:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:46:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:50,784 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:50,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:50,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:50,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:46:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 15:46:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 15:46:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:51,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:51,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:46:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 15:46:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:51,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:51,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:46:51,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 242 proven. 31 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-27 15:46:51,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379201065] [2020-10-27 15:46:51,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:51,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:51,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499759250] [2020-10-27 15:46:51,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:51,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:51,727 INFO L87 Difference]: Start difference. First operand 121764 states and 150865 transitions. Second operand 7 states. [2020-10-27 15:46:52,004 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160