/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:59:38,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:59:38,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:59:38,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:59:38,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:59:38,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:59:38,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:59:38,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:59:38,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:59:38,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:59:38,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:59:38,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:59:38,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:59:38,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:59:38,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:59:38,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:59:38,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:59:38,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:59:38,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:59:38,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:59:38,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:59:38,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:59:38,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:59:38,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:59:38,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:59:38,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:59:38,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:59:38,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:59:38,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:59:38,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:59:38,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:59:38,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:59:38,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:59:38,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:59:38,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:59:38,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:59:38,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:59:38,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:59:38,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:59:38,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:59:38,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:59:38,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:59:38,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:59:38,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:59:38,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:59:38,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:59:38,823 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:59:38,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:59:38,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:59:38,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:59:38,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:59:38,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:59:38,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:59:38,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:59:38,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:59:38,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:59:38,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:59:38,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:59:38,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:59:38,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:59:38,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:59:38,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:59:38,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:59:38,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:59:38,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:59:38,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:59:38,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:59:38,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:59:38,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:59:38,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:59:38,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:59:38,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:59:39,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:59:39,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:59:39,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:59:39,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:59:39,253 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:59:39,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-29 04:59:39,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0a5d665/3a8f1c3fdead47feabb4fa51dd784f8b/FLAG6674fb750 [2020-10-29 04:59:40,243 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:59:40,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-29 04:59:40,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0a5d665/3a8f1c3fdead47feabb4fa51dd784f8b/FLAG6674fb750 [2020-10-29 04:59:40,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0a5d665/3a8f1c3fdead47feabb4fa51dd784f8b [2020-10-29 04:59:40,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:59:40,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:59:40,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:59:40,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:59:40,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:59:40,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:59:40" (1/1) ... [2020-10-29 04:59:40,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2430e15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:40, skipping insertion in model container [2020-10-29 04:59:40,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:59:40" (1/1) ... [2020-10-29 04:59:40,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:59:40,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:59:41,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:59:41,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:59:41,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:59:41,479 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:59:41,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41 WrapperNode [2020-10-29 04:59:41,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:59:41,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:59:41,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:59:41,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:59:41,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (1/1) ... [2020-10-29 04:59:41,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:59:41,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:59:41,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:59:41,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:59:41,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (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 [2020-10-29 04:59:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:59:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:59:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:59:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:59:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:59:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:59:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:59:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:59:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:59:43,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:59:43,981 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:59:43,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:59:43 BoogieIcfgContainer [2020-10-29 04:59:43,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:59:43,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:59:43,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:59:43,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:59:43,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:59:40" (1/3) ... [2020-10-29 04:59:43,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfc3dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:59:43, skipping insertion in model container [2020-10-29 04:59:43,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:59:41" (2/3) ... [2020-10-29 04:59:43,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfc3dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:59:43, skipping insertion in model container [2020-10-29 04:59:43,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:59:43" (3/3) ... [2020-10-29 04:59:43,997 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label48.c [2020-10-29 04:59:44,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:59:44,020 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:59:44,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:59:44,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:59:44,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:59:44,079 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:59:44,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:59:44,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:59:44,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:59:44,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:59:44,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:59:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:59:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 04:59:44,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:44,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:44,158 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 292019400, now seen corresponding path program 1 times [2020-10-29 04:59:44,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:44,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536081662] [2020-10-29 04:59:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 04:59:49,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4582 [2020-10-29 04:59:49,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:49,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 04:59:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:59:49,666 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:49,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:59:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:49,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:49,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536081662] [2020-10-29 04:59:49,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:59:49,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:59:49,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374502802] [2020-10-29 04:59:49,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:59:49,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:59:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:59:49,874 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:59:50,106 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:53,735 INFO L93 Difference]: Finished difference Result 869 states and 1524 transitions. [2020-10-29 04:59:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:53,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2020-10-29 04:59:53,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:53,757 INFO L225 Difference]: With dead ends: 869 [2020-10-29 04:59:53,757 INFO L226 Difference]: Without dead ends: 477 [2020-10-29 04:59:53,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-29 04:59:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 468. [2020-10-29 04:59:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-29 04:59:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 722 transitions. [2020-10-29 04:59:53,886 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 722 transitions. Word has length 190 [2020-10-29 04:59:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:53,890 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 722 transitions. [2020-10-29 04:59:53,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:59:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 722 transitions. [2020-10-29 04:59:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 04:59:53,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:53,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:53,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:59:53,896 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash 144500916, now seen corresponding path program 1 times [2020-10-29 04:59:53,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:53,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318999658] [2020-10-29 04:59:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 04:59:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3297 [2020-10-29 04:59:57,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:59:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-29 04:59:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:59:57,743 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:57,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:59:57,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:59:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:59:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:58,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318999658] [2020-10-29 04:59:58,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:58,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:58,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354923325] [2020-10-29 04:59:58,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:58,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:58,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:58,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:58,043 INFO L87 Difference]: Start difference. First operand 468 states and 722 transitions. Second operand 5 states. [2020-10-29 04:59:58,577 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:01,799 INFO L93 Difference]: Finished difference Result 1354 states and 2109 transitions. [2020-10-29 05:00:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:01,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-29 05:00:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:01,806 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 05:00:01,806 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 05:00:01,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 05:00:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-29 05:00:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 05:00:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 720 transitions. [2020-10-29 05:00:01,856 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 720 transitions. Word has length 200 [2020-10-29 05:00:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:01,857 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 720 transitions. [2020-10-29 05:00:01,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 720 transitions. [2020-10-29 05:00:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 05:00:01,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:01,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:01,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:00:01,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -817831517, now seen corresponding path program 1 times [2020-10-29 05:00:01,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:01,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691477312] [2020-10-29 05:00:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:04,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:04,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 05:00:04,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-10-29 05:00:04,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:04,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 05:00:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 05:00:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:05,501 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:05,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 05:00:05,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:00:05,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:05,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:00:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:06,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691477312] [2020-10-29 05:00:06,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:06,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:06,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590552467] [2020-10-29 05:00:06,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:06,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:06,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:06,240 INFO L87 Difference]: Start difference. First operand 467 states and 720 transitions. Second operand 5 states. [2020-10-29 05:00:06,786 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 05:00:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:09,782 INFO L93 Difference]: Finished difference Result 1105 states and 1759 transitions. [2020-10-29 05:00:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:09,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 05:00:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:09,787 INFO L225 Difference]: With dead ends: 1105 [2020-10-29 05:00:09,788 INFO L226 Difference]: Without dead ends: 535 [2020-10-29 05:00:09,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-29 05:00:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 531. [2020-10-29 05:00:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-29 05:00:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 789 transitions. [2020-10-29 05:00:09,821 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 789 transitions. Word has length 204 [2020-10-29 05:00:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:09,822 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 789 transitions. [2020-10-29 05:00:09,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 789 transitions. [2020-10-29 05:00:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 05:00:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:09,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:09,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:00:09,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash 399796319, now seen corresponding path program 1 times [2020-10-29 05:00:09,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:09,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836864297] [2020-10-29 05:00:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 05:00:11,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:00:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2088 [2020-10-29 05:00:11,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:00:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 05:00:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,400 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:12,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:12,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:00:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:12,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:00:12,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:00:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:12,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836864297] [2020-10-29 05:00:12,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:12,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935094256] [2020-10-29 05:00:12,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:12,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:12,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:12,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:12,677 INFO L87 Difference]: Start difference. First operand 531 states and 789 transitions. Second operand 5 states. [2020-10-29 05:00:12,947 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:15,796 INFO L93 Difference]: Finished difference Result 1497 states and 2278 transitions. [2020-10-29 05:00:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:15,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-29 05:00:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:15,807 INFO L225 Difference]: With dead ends: 1497 [2020-10-29 05:00:15,808 INFO L226 Difference]: Without dead ends: 972 [2020-10-29 05:00:15,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-29 05:00:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 966. [2020-10-29 05:00:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-29 05:00:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2020-10-29 05:00:15,871 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 206 [2020-10-29 05:00:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:15,872 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2020-10-29 05:00:15,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2020-10-29 05:00:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 05:00:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:15,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:15,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:00:15,878 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1017147373, now seen corresponding path program 1 times [2020-10-29 05:00:15,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:15,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946508448] [2020-10-29 05:00:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:18,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 05:00:18,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-29 05:00:18,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:18,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:00:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 05:00:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:18,673 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:18,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:18,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:18,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:00:18,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:18,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:18,853 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:00:18,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:00:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 05:00:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:18,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:00:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:19,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946508448] [2020-10-29 05:00:19,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:19,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:19,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953975352] [2020-10-29 05:00:19,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:19,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:19,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:19,046 INFO L87 Difference]: Start difference. First operand 966 states and 1397 transitions. Second operand 5 states. [2020-10-29 05:00:19,451 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:22,977 INFO L93 Difference]: Finished difference Result 2769 states and 4095 transitions. [2020-10-29 05:00:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:22,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-29 05:00:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:22,992 INFO L225 Difference]: With dead ends: 2769 [2020-10-29 05:00:22,992 INFO L226 Difference]: Without dead ends: 1809 [2020-10-29 05:00:22,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2020-10-29 05:00:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1803. [2020-10-29 05:00:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2020-10-29 05:00:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2575 transitions. [2020-10-29 05:00:23,075 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2575 transitions. Word has length 221 [2020-10-29 05:00:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:23,075 INFO L481 AbstractCegarLoop]: Abstraction has 1803 states and 2575 transitions. [2020-10-29 05:00:23,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2575 transitions. [2020-10-29 05:00:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 05:00:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:23,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:00:23,085 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1311181954, now seen corresponding path program 1 times [2020-10-29 05:00:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:23,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368888823] [2020-10-29 05:00:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:28,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:28,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 05:00:28,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 05:00:28,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:28,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:00:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 05:00:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:28,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:28,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:28,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:00:28,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:28,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:28,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:28,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:28,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:28,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:00:28,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:28,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 05:00:28,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368888823] [2020-10-29 05:00:28,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:28,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:28,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446295019] [2020-10-29 05:00:28,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:28,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:28,910 INFO L87 Difference]: Start difference. First operand 1803 states and 2575 transitions. Second operand 5 states. [2020-10-29 05:00:29,173 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:32,445 INFO L93 Difference]: Finished difference Result 5309 states and 7764 transitions. [2020-10-29 05:00:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:32,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-29 05:00:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:32,473 INFO L225 Difference]: With dead ends: 5309 [2020-10-29 05:00:32,474 INFO L226 Difference]: Without dead ends: 3512 [2020-10-29 05:00:32,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2020-10-29 05:00:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3501. [2020-10-29 05:00:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2020-10-29 05:00:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4915 transitions. [2020-10-29 05:00:32,628 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4915 transitions. Word has length 225 [2020-10-29 05:00:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:32,628 INFO L481 AbstractCegarLoop]: Abstraction has 3501 states and 4915 transitions. [2020-10-29 05:00:32,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4915 transitions. [2020-10-29 05:00:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 05:00:32,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:32,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:32,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:00:32,643 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:32,645 INFO L82 PathProgramCache]: Analyzing trace with hash 557971507, now seen corresponding path program 1 times [2020-10-29 05:00:32,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:32,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696825596] [2020-10-29 05:00:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:37,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 05:00:37,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 05:00:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:37,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:00:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 05:00:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:00:38,144 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:38,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:38,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:38,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:00:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:00:38,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696825596] [2020-10-29 05:00:38,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:38,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:00:38,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965394630] [2020-10-29 05:00:38,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:00:38,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:00:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:38,630 INFO L87 Difference]: Start difference. First operand 3501 states and 4915 transitions. Second operand 6 states. [2020-10-29 05:00:39,011 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:42,479 INFO L93 Difference]: Finished difference Result 8768 states and 13000 transitions. [2020-10-29 05:00:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:00:42,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-29 05:00:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:42,520 INFO L225 Difference]: With dead ends: 8768 [2020-10-29 05:00:42,520 INFO L226 Difference]: Without dead ends: 5273 [2020-10-29 05:00:42,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2020-10-29 05:00:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 5203. [2020-10-29 05:00:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5203 states. [2020-10-29 05:00:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7064 transitions. [2020-10-29 05:00:42,752 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7064 transitions. Word has length 236 [2020-10-29 05:00:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:42,753 INFO L481 AbstractCegarLoop]: Abstraction has 5203 states and 7064 transitions. [2020-10-29 05:00:42,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:00:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7064 transitions. [2020-10-29 05:00:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 05:00:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:42,775 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:42,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:00:42,776 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash -502430898, now seen corresponding path program 1 times [2020-10-29 05:00:42,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:42,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708157208] [2020-10-29 05:00:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 05:00:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 05:00:47,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,259 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:48,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 05:00:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:00:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:00:48,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708157208] [2020-10-29 05:00:48,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:48,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:00:48,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312160907] [2020-10-29 05:00:48,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:00:48,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:00:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:48,576 INFO L87 Difference]: Start difference. First operand 5203 states and 7064 transitions. Second operand 6 states. [2020-10-29 05:00:48,858 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 05:00:49,240 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:54,004 INFO L93 Difference]: Finished difference Result 15089 states and 20992 transitions. [2020-10-29 05:00:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:00:54,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2020-10-29 05:00:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:54,062 INFO L225 Difference]: With dead ends: 15089 [2020-10-29 05:00:54,062 INFO L226 Difference]: Without dead ends: 9892 [2020-10-29 05:00:54,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2020-10-29 05:00:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 9868. [2020-10-29 05:00:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9868 states. [2020-10-29 05:00:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 13595 transitions. [2020-10-29 05:00:54,449 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 13595 transitions. Word has length 241 [2020-10-29 05:00:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:54,449 INFO L481 AbstractCegarLoop]: Abstraction has 9868 states and 13595 transitions. [2020-10-29 05:00:54,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:00:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 13595 transitions. [2020-10-29 05:00:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 05:00:54,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:54,481 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:54,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:00:54,481 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1715849770, now seen corresponding path program 1 times [2020-10-29 05:00:54,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:54,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334914777] [2020-10-29 05:00:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 05:00:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 05:00:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:59,893 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:01:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:01:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:01:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:01:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 71 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:01:00,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334914777] [2020-10-29 05:01:00,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:00,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:01:00,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325479545] [2020-10-29 05:01:00,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:01:00,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:01:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:00,369 INFO L87 Difference]: Start difference. First operand 9868 states and 13595 transitions. Second operand 6 states. [2020-10-29 05:01:00,741 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:04,881 INFO L93 Difference]: Finished difference Result 28010 states and 39980 transitions. [2020-10-29 05:01:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:01:04,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 269 [2020-10-29 05:01:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:04,970 INFO L225 Difference]: With dead ends: 28010 [2020-10-29 05:01:04,970 INFO L226 Difference]: Without dead ends: 18148 [2020-10-29 05:01:04,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18148 states. [2020-10-29 05:01:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18148 to 18007. [2020-10-29 05:01:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18007 states. [2020-10-29 05:01:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18007 states to 18007 states and 25329 transitions. [2020-10-29 05:01:05,584 INFO L78 Accepts]: Start accepts. Automaton has 18007 states and 25329 transitions. Word has length 269 [2020-10-29 05:01:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:05,585 INFO L481 AbstractCegarLoop]: Abstraction has 18007 states and 25329 transitions. [2020-10-29 05:01:05,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18007 states and 25329 transitions. [2020-10-29 05:01:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 05:01:05,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:05,652 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 05:01:05,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:01:05,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1349160521, now seen corresponding path program 1 times [2020-10-29 05:01:05,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:05,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714238391] [2020-10-29 05:01:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:10,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:10,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-29 05:01:10,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 05:01:10,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:10,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:01:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 05:01:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,078 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:01:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 05:01:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:01:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 05:01:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:11,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:01:11,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:01:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 80 proven. 51 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 05:01:11,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714238391] [2020-10-29 05:01:11,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:11,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:01:11,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877874452] [2020-10-29 05:01:11,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:01:11,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:11,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:01:11,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:11,752 INFO L87 Difference]: Start difference. First operand 18007 states and 25329 transitions. Second operand 8 states. [2020-10-29 05:01:12,037 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:14,005 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:01:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:16,632 INFO L93 Difference]: Finished difference Result 53883 states and 79673 transitions. [2020-10-29 05:01:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:01:16,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-10-29 05:01:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:16,833 INFO L225 Difference]: With dead ends: 53883 [2020-10-29 05:01:16,833 INFO L226 Difference]: Without dead ends: 35882 [2020-10-29 05:01:16,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:01:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35882 states. [2020-10-29 05:01:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35882 to 35387. [2020-10-29 05:01:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35387 states. [2020-10-29 05:01:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35387 states to 35387 states and 49736 transitions. [2020-10-29 05:01:18,032 INFO L78 Accepts]: Start accepts. Automaton has 35387 states and 49736 transitions. Word has length 274 [2020-10-29 05:01:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:18,032 INFO L481 AbstractCegarLoop]: Abstraction has 35387 states and 49736 transitions. [2020-10-29 05:01:18,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:01:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 35387 states and 49736 transitions. [2020-10-29 05:01:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 05:01:18,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:18,108 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:18,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:01:18,108 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash 148709474, now seen corresponding path program 1 times [2020-10-29 05:01:18,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:18,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383689704] [2020-10-29 05:01:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 05:01:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:23,530 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:23,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:01:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:01:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:01:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:23,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:01:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:23,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:01:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 05:01:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 05:01:23,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383689704] [2020-10-29 05:01:23,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:23,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:23,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791002967] [2020-10-29 05:01:23,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:23,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:23,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:23,897 INFO L87 Difference]: Start difference. First operand 35387 states and 49736 transitions. Second operand 5 states. [2020-10-29 05:01:24,266 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:01:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:27,962 INFO L93 Difference]: Finished difference Result 90725 states and 129784 transitions. [2020-10-29 05:01:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:27,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-29 05:01:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:28,246 INFO L225 Difference]: With dead ends: 90725 [2020-10-29 05:01:28,247 INFO L226 Difference]: Without dead ends: 55344 [2020-10-29 05:01:28,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55344 states. [2020-10-29 05:01:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55344 to 55131. [2020-10-29 05:01:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55131 states. [2020-10-29 05:01:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55131 states to 55131 states and 77089 transitions. [2020-10-29 05:01:30,073 INFO L78 Accepts]: Start accepts. Automaton has 55131 states and 77089 transitions. Word has length 280 [2020-10-29 05:01:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:30,074 INFO L481 AbstractCegarLoop]: Abstraction has 55131 states and 77089 transitions. [2020-10-29 05:01:30,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 55131 states and 77089 transitions. [2020-10-29 05:01:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 05:01:30,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:30,472 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:30,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:01:30,473 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash 74256282, now seen corresponding path program 1 times [2020-10-29 05:01:30,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:30,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702214018] [2020-10-29 05:01:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:35,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 05:01:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 05:01:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:35,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 05:01:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 05:01:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:35,928 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:36,079 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:01:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:01:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:01:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 05:01:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:36,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:36,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:36,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 05:01:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 175 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:01:36,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702214018] [2020-10-29 05:01:36,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:36,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:01:36,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102581872] [2020-10-29 05:01:36,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 05:01:36,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 05:01:36,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:01:36,802 INFO L87 Difference]: Start difference. First operand 55131 states and 77089 transitions. Second operand 10 states. [2020-10-29 05:01:37,363 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-29 05:01:37,807 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:40,085 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-29 05:01:41,275 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:01:42,601 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:01:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:46,791 INFO L93 Difference]: Finished difference Result 179061 states and 254416 transitions. [2020-10-29 05:01:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 05:01:46,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 307 [2020-10-29 05:01:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:47,989 INFO L225 Difference]: With dead ends: 179061 [2020-10-29 05:01:47,989 INFO L226 Difference]: Without dead ends: 123936 [2020-10-29 05:01:48,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-10-29 05:01:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123936 states. [2020-10-29 05:01:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123936 to 122606. [2020-10-29 05:01:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122606 states. [2020-10-29 05:01:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122606 states to 122606 states and 173585 transitions. [2020-10-29 05:01:52,112 INFO L78 Accepts]: Start accepts. Automaton has 122606 states and 173585 transitions. Word has length 307 [2020-10-29 05:01:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:52,113 INFO L481 AbstractCegarLoop]: Abstraction has 122606 states and 173585 transitions. [2020-10-29 05:01:52,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 05:01:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 122606 states and 173585 transitions. [2020-10-29 05:01:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-29 05:01:52,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:52,408 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:52,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:01:52,408 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1903463946, now seen corresponding path program 1 times [2020-10-29 05:01:52,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:52,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230006562] [2020-10-29 05:01:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 05:01:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,131 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:58,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 05:01:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:01:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-29 05:01:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 05:01:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-29 05:01:59,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230006562] [2020-10-29 05:01:59,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:59,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:59,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253740203] [2020-10-29 05:01:59,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:59,008 INFO L87 Difference]: Start difference. First operand 122606 states and 173585 transitions. Second operand 7 states. [2020-10-29 05:01:59,293 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:03,163 INFO L93 Difference]: Finished difference Result 239381 states and 338589 transitions. [2020-10-29 05:02:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:02:03,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-29 05:02:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:03,884 INFO L225 Difference]: With dead ends: 239381 [2020-10-29 05:02:03,885 INFO L226 Difference]: Without dead ends: 116781 [2020-10-29 05:02:04,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:02:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116781 states. [2020-10-29 05:02:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116781 to 116443. [2020-10-29 05:02:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116443 states. [2020-10-29 05:02:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116443 states to 116443 states and 162077 transitions. [2020-10-29 05:02:07,938 INFO L78 Accepts]: Start accepts. Automaton has 116443 states and 162077 transitions. Word has length 459 [2020-10-29 05:02:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:07,939 INFO L481 AbstractCegarLoop]: Abstraction has 116443 states and 162077 transitions. [2020-10-29 05:02:07,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 116443 states and 162077 transitions. [2020-10-29 05:02:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 05:02:08,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:08,565 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:02:08,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:02:08,565 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash -20648840, now seen corresponding path program 1 times [2020-10-29 05:02:08,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:08,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105340388] [2020-10-29 05:02:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:13,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 05:02:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:14,018 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:14,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:02:14,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 05:02:14,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:14,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:02:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-29 05:02:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 05:02:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 05:02:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:02:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 05:02:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:14,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 261 proven. 124 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-29 05:02:15,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105340388] [2020-10-29 05:02:15,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:15,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:15,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912498182] [2020-10-29 05:02:15,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:15,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:15,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:15,014 INFO L87 Difference]: Start difference. First operand 116443 states and 162077 transitions. Second operand 7 states. [2020-10-29 05:02:15,292 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:16,082 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:02:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:19,507 INFO L93 Difference]: Finished difference Result 236728 states and 329327 transitions. [2020-10-29 05:02:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:19,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-29 05:02:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:20,362 INFO L225 Difference]: With dead ends: 236728 [2020-10-29 05:02:20,363 INFO L226 Difference]: Without dead ends: 120291 [2020-10-29 05:02:20,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120291 states. [2020-10-29 05:02:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120291 to 119479. [2020-10-29 05:02:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119479 states. [2020-10-29 05:02:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119479 states to 119479 states and 166159 transitions. [2020-10-29 05:02:23,941 INFO L78 Accepts]: Start accepts. Automaton has 119479 states and 166159 transitions. Word has length 463 [2020-10-29 05:02:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:23,942 INFO L481 AbstractCegarLoop]: Abstraction has 119479 states and 166159 transitions. [2020-10-29 05:02:23,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 119479 states and 166159 transitions. [2020-10-29 05:02:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-29 05:02:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:24,148 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:02:24,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:02:24,148 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1615671239, now seen corresponding path program 1 times [2020-10-29 05:02:24,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:24,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659124797] [2020-10-29 05:02:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:02:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 05:02:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,555 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:29,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:02:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:02:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:02:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 05:02:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:02:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:02:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-29 05:02:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:30,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 291 proven. 132 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-29 05:02:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659124797] [2020-10-29 05:02:30,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:30,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:30,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283267963] [2020-10-29 05:02:30,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:30,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:30,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:30,494 INFO L87 Difference]: Start difference. First operand 119479 states and 166159 transitions. Second operand 7 states. [2020-10-29 05:02:30,896 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:31,146 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:38,003 INFO L93 Difference]: Finished difference Result 235808 states and 347815 transitions. [2020-10-29 05:02:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:38,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-29 05:02:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:39,009 INFO L225 Difference]: With dead ends: 235808 [2020-10-29 05:02:39,009 INFO L226 Difference]: Without dead ends: 116751 [2020-10-29 05:02:39,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116751 states. [2020-10-29 05:02:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116751 to 110329. [2020-10-29 05:02:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110329 states. [2020-10-29 05:02:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110329 states to 110329 states and 145339 transitions. [2020-10-29 05:02:42,488 INFO L78 Accepts]: Start accepts. Automaton has 110329 states and 145339 transitions. Word has length 475 [2020-10-29 05:02:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:42,489 INFO L481 AbstractCegarLoop]: Abstraction has 110329 states and 145339 transitions. [2020-10-29 05:02:42,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 110329 states and 145339 transitions. [2020-10-29 05:02:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-29 05:02:42,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:42,623 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:42,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:02:42,624 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:42,624 INFO L82 PathProgramCache]: Analyzing trace with hash 321978548, now seen corresponding path program 2 times [2020-10-29 05:02:42,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:42,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719761774] [2020-10-29 05:02:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:42,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:02:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 05:02:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,068 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:02:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:02:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:48,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:02:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-29 05:02:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 05:02:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:02:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-29 05:02:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 343 proven. 132 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-29 05:02:49,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719761774] [2020-10-29 05:02:49,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:49,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:49,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234080059] [2020-10-29 05:02:49,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:49,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:49,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:49,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:49,530 INFO L87 Difference]: Start difference. First operand 110329 states and 145339 transitions. Second operand 8 states. [2020-10-29 05:02:49,829 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:02:50,787 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:02:53,977 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:02:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:56,878 INFO L93 Difference]: Finished difference Result 232112 states and 307398 transitions. [2020-10-29 05:02:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:02:56,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 501 [2020-10-29 05:02:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:57,206 INFO L225 Difference]: With dead ends: 232112 [2020-10-29 05:02:57,206 INFO L226 Difference]: Without dead ends: 123049 [2020-10-29 05:02:57,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 05:02:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123049 states.