/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=SHALLOWEST --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/Problem14_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:25:57,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:25:57,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:25:57,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:25:57,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:25:57,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:25:57,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:25:57,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:25:57,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:25:57,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:25:57,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:25:57,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:25:57,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:25:57,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:25:57,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:25:57,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:25:57,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:25:57,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:25:57,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:25:57,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:25:57,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:25:57,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:25:57,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:25:57,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:25:57,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:25:57,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:25:57,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:25:57,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:25:57,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:25:57,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:25:57,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:25:57,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:25:57,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:25:57,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:25:57,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:25:57,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:25:57,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:25:57,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:25:57,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:25:57,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:25:57,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:25:57,764 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 [2020-10-26 23:25:57,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:25:57,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:25:57,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:25:57,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:25:57,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:25:57,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:25:57,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:25:57,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:25:57,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:25:57,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:25:57,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:25:57,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:25:57,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:25:57,798 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:25:57,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:25:57,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:25:57,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:25:57,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:25:57,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:25:57,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:25:57,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:25:57,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:25:57,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:25:57,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:25:57,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:25:57,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:25:57,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:25:57,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:25:57,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:25:57,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:25:58,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:25:58,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:25:58,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:25:58,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:25:58,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:25:58,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label27.c [2020-10-26 23:25:58,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b783ea686/c582e4416f01467b9370476d85e56a15/FLAGd96a3236c [2020-10-26 23:25:59,106 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:25:59,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label27.c [2020-10-26 23:25:59,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b783ea686/c582e4416f01467b9370476d85e56a15/FLAGd96a3236c [2020-10-26 23:25:59,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b783ea686/c582e4416f01467b9370476d85e56a15 [2020-10-26 23:25:59,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:25:59,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:25:59,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:25:59,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:25:59,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:25:59,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:59" (1/1) ... [2020-10-26 23:25:59,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51516e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:59, skipping insertion in model container [2020-10-26 23:25:59,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:59" (1/1) ... [2020-10-26 23:25:59,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:25:59,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:25:59,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:25:59,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:26:00,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:26:00,172 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:26:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00 WrapperNode [2020-10-26 23:26:00,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:26:00,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:26:00,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:26:00,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:26:00,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (1/1) ... [2020-10-26 23:26:00,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:26:00,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:26:00,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:26:00,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:26:00,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (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 [2020-10-26 23:26:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:26:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:26:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:26:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:26:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:26:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:26:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:26:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:26:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:26:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:26:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:26:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:26:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:26:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:26:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:26:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:26:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:26:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:26:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:26:01,792 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:26:01,793 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:26:01,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:01 BoogieIcfgContainer [2020-10-26 23:26:01,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:26:01,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:26:01,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:26:01,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:26:01,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:25:59" (1/3) ... [2020-10-26 23:26:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb8563f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:01, skipping insertion in model container [2020-10-26 23:26:01,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:00" (2/3) ... [2020-10-26 23:26:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb8563f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:01, skipping insertion in model container [2020-10-26 23:26:01,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:01" (3/3) ... [2020-10-26 23:26:01,804 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label27.c [2020-10-26 23:26:01,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:26:01,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:26:01,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:26:01,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:26:01,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:26:01,868 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:26:01,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:26:01,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:26:01,868 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:26:01,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:26:01,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:26:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:26:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 23:26:01,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:01,899 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] [2020-10-26 23:26:01,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash -509404408, now seen corresponding path program 1 times [2020-10-26 23:26:01,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:01,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605146087] [2020-10-26 23:26:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 23:26:02,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-26 23:26:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 23:26:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:02,815 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:26:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:02,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:02,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:26:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:02,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605146087] [2020-10-26 23:26:02,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:02,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:26:02,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931338601] [2020-10-26 23:26:02,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:26:02,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:02,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:26:02,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:26:02,929 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:26:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:04,995 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:26:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:26:04,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 23:26:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:05,013 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:26:05,013 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:26:05,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:26:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:26:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:26:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:26:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:26:05,095 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 36 [2020-10-26 23:26:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:05,096 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:26:05,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:26:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:26:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-26 23:26:05,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:05,101 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] [2020-10-26 23:26:05,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:26:05,102 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:05,103 INFO L82 PathProgramCache]: Analyzing trace with hash 687685172, now seen corresponding path program 1 times [2020-10-26 23:26:05,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:05,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72973434] [2020-10-26 23:26:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:26:05,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-26 23:26:05,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:26:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:06,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:26:06,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:26:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72973434] [2020-10-26 23:26:06,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:06,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:06,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698334347] [2020-10-26 23:26:06,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:06,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:06,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:06,400 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-26 23:26:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:09,147 INFO L93 Difference]: Finished difference Result 1156 states and 1754 transitions. [2020-10-26 23:26:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:09,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-26 23:26:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:09,159 INFO L225 Difference]: With dead ends: 1156 [2020-10-26 23:26:09,160 INFO L226 Difference]: Without dead ends: 785 [2020-10-26 23:26:09,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-26 23:26:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 751. [2020-10-26 23:26:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-26 23:26:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 991 transitions. [2020-10-26 23:26:09,236 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 991 transitions. Word has length 105 [2020-10-26 23:26:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:09,237 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 991 transitions. [2020-10-26 23:26:09,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 991 transitions. [2020-10-26 23:26:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 23:26:09,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:09,239 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] [2020-10-26 23:26:09,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:26:09,240 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:09,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:09,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1215353300, now seen corresponding path program 1 times [2020-10-26 23:26:09,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:09,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107018687] [2020-10-26 23:26:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 23:26:10,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107018687] [2020-10-26 23:26:10,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:10,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:10,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377759624] [2020-10-26 23:26:10,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:10,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:10,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:10,453 INFO L87 Difference]: Start difference. First operand 751 states and 991 transitions. Second operand 7 states. [2020-10-26 23:26:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:12,680 INFO L93 Difference]: Finished difference Result 1338 states and 1793 transitions. [2020-10-26 23:26:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:12,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-26 23:26:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:12,688 INFO L225 Difference]: With dead ends: 1338 [2020-10-26 23:26:12,688 INFO L226 Difference]: Without dead ends: 961 [2020-10-26 23:26:12,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-26 23:26:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 937. [2020-10-26 23:26:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:26:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1195 transitions. [2020-10-26 23:26:12,739 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1195 transitions. Word has length 109 [2020-10-26 23:26:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:12,739 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1195 transitions. [2020-10-26 23:26:12,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1195 transitions. [2020-10-26 23:26:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-26 23:26:12,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:12,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:26:12,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:26:12,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1152955936, now seen corresponding path program 1 times [2020-10-26 23:26:12,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:12,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310321901] [2020-10-26 23:26:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-26 23:26:14,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-26 23:26:14,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:26:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:26:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:14,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:26:14,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:14,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:26:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:26:14,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310321901] [2020-10-26 23:26:14,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:14,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:14,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381858516] [2020-10-26 23:26:14,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:14,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:14,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:14,652 INFO L87 Difference]: Start difference. First operand 937 states and 1195 transitions. Second operand 7 states. [2020-10-26 23:26:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:17,220 INFO L93 Difference]: Finished difference Result 1712 states and 2330 transitions. [2020-10-26 23:26:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:17,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-26 23:26:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:17,232 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:26:17,232 INFO L226 Difference]: Without dead ends: 963 [2020-10-26 23:26:17,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-26 23:26:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 937. [2020-10-26 23:26:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:26:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1143 transitions. [2020-10-26 23:26:17,288 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1143 transitions. Word has length 193 [2020-10-26 23:26:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:17,291 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1143 transitions. [2020-10-26 23:26:17,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1143 transitions. [2020-10-26 23:26:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 23:26:17,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:17,295 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:26:17,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:26:17,295 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1732527372, now seen corresponding path program 1 times [2020-10-26 23:26:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:17,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708113008] [2020-10-26 23:26:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:20,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-26 23:26:20,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:20,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3118 [2020-10-26 23:26:20,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:26:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:26:20,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:26:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:20,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:26:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:26:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:26:21,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708113008] [2020-10-26 23:26:21,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:21,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:21,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294813956] [2020-10-26 23:26:21,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:21,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:21,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:21,186 INFO L87 Difference]: Start difference. First operand 937 states and 1143 transitions. Second operand 8 states. [2020-10-26 23:26:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:23,993 INFO L93 Difference]: Finished difference Result 2092 states and 2697 transitions. [2020-10-26 23:26:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:26:23,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-26 23:26:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:24,003 INFO L225 Difference]: With dead ends: 2092 [2020-10-26 23:26:24,004 INFO L226 Difference]: Without dead ends: 1153 [2020-10-26 23:26:24,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:26:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-10-26 23:26:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1123. [2020-10-26 23:26:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:26:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1257 transitions. [2020-10-26 23:26:24,065 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1257 transitions. Word has length 203 [2020-10-26 23:26:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:24,066 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1257 transitions. [2020-10-26 23:26:24,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1257 transitions. [2020-10-26 23:26:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-26 23:26:24,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:24,072 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:24,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:26:24,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:24,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1835782480, now seen corresponding path program 1 times [2020-10-26 23:26:24,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:24,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400499599] [2020-10-26 23:26:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-26 23:26:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:26:29,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:26:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:29,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:29,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:29,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:29,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:26:29,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:29,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:29,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:26:29,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:26:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:26:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:26:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-26 23:26:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 84 proven. 146 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 23:26:30,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400499599] [2020-10-26 23:26:30,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:30,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:26:30,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968950776] [2020-10-26 23:26:30,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:30,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:30,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:30,073 INFO L87 Difference]: Start difference. First operand 1123 states and 1257 transitions. Second operand 8 states. [2020-10-26 23:26:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:32,469 INFO L93 Difference]: Finished difference Result 3004 states and 3429 transitions. [2020-10-26 23:26:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:32,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-26 23:26:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:32,480 INFO L225 Difference]: With dead ends: 3004 [2020-10-26 23:26:32,480 INFO L226 Difference]: Without dead ends: 2069 [2020-10-26 23:26:32,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:26:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-10-26 23:26:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2061. [2020-10-26 23:26:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-26 23:26:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2298 transitions. [2020-10-26 23:26:32,574 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2298 transitions. Word has length 301 [2020-10-26 23:26:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:32,575 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2298 transitions. [2020-10-26 23:26:32,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2298 transitions. [2020-10-26 23:26:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-26 23:26:32,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:32,584 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, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:32,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:26:32,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2001115016, now seen corresponding path program 1 times [2020-10-26 23:26:32,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:32,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105136869] [2020-10-26 23:26:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-26 23:26:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:26:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:37,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:26:37,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:26:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:26:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:38,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:26:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:26:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 265 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:26:38,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105136869] [2020-10-26 23:26:38,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:38,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:38,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878298633] [2020-10-26 23:26:38,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:38,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:38,679 INFO L87 Difference]: Start difference. First operand 2061 states and 2298 transitions. Second operand 7 states. [2020-10-26 23:26:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:40,641 INFO L93 Difference]: Finished difference Result 4310 states and 4883 transitions. [2020-10-26 23:26:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:26:40,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-26 23:26:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:40,655 INFO L225 Difference]: With dead ends: 4310 [2020-10-26 23:26:40,655 INFO L226 Difference]: Without dead ends: 2437 [2020-10-26 23:26:40,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:26:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-26 23:26:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2431. [2020-10-26 23:26:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-26 23:26:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 2722 transitions. [2020-10-26 23:26:40,725 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 2722 transitions. Word has length 411 [2020-10-26 23:26:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:40,726 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 2722 transitions. [2020-10-26 23:26:40,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 2722 transitions. [2020-10-26 23:26:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-26 23:26:40,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:40,735 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:26:40,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:26:40,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash -989732216, now seen corresponding path program 1 times [2020-10-26 23:26:40,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:40,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538336679] [2020-10-26 23:26:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:45,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:45,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-26 23:26:45,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:26:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:26:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:26:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:45,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:45,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:45,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:26:45,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:45,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:45,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:45,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:46,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:46,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:46,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:26:46,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:26:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:26:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:46,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:26:46,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:26:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 287 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:26:46,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538336679] [2020-10-26 23:26:46,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:46,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:46,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033229196] [2020-10-26 23:26:46,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:46,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:46,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:46,568 INFO L87 Difference]: Start difference. First operand 2431 states and 2722 transitions. Second operand 7 states. [2020-10-26 23:26:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:49,119 INFO L93 Difference]: Finished difference Result 5621 states and 6517 transitions. [2020-10-26 23:26:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:49,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-26 23:26:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:49,138 INFO L225 Difference]: With dead ends: 5621 [2020-10-26 23:26:49,138 INFO L226 Difference]: Without dead ends: 3562 [2020-10-26 23:26:49,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-26 23:26:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3185. [2020-10-26 23:26:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-26 23:26:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3681 transitions. [2020-10-26 23:26:49,256 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3681 transitions. Word has length 422 [2020-10-26 23:26:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:49,257 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 3681 transitions. [2020-10-26 23:26:49,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3681 transitions. [2020-10-26 23:26:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-26 23:26:49,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:49,269 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, 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, 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, 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] [2020-10-26 23:26:49,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:26:49,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash -491383488, now seen corresponding path program 1 times [2020-10-26 23:26:49,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:49,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819779341] [2020-10-26 23:26:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-26 23:26:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-26 23:26:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-26 23:26:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 338 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:26:55,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819779341] [2020-10-26 23:26:55,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:55,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:55,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085619034] [2020-10-26 23:26:55,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:55,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:55,409 INFO L87 Difference]: Start difference. First operand 3185 states and 3681 transitions. Second operand 7 states. [2020-10-26 23:26:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:57,306 INFO L93 Difference]: Finished difference Result 6014 states and 7017 transitions. [2020-10-26 23:26:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:26:57,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 514 [2020-10-26 23:26:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:57,322 INFO L225 Difference]: With dead ends: 6014 [2020-10-26 23:26:57,323 INFO L226 Difference]: Without dead ends: 3201 [2020-10-26 23:26:57,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:26:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2020-10-26 23:26:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3187. [2020-10-26 23:26:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3187 states. [2020-10-26 23:26:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 3677 transitions. [2020-10-26 23:26:57,413 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 3677 transitions. Word has length 514 [2020-10-26 23:26:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:57,414 INFO L481 AbstractCegarLoop]: Abstraction has 3187 states and 3677 transitions. [2020-10-26 23:26:57,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 3677 transitions. [2020-10-26 23:26:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-10-26 23:26:57,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:57,420 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:26:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:26:57,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -892286020, now seen corresponding path program 1 times [2020-10-26 23:26:57,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948436195] [2020-10-26 23:26:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:27:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:02,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:02,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:27:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-26 23:27:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 512 proven. 154 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-26 23:27:03,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948436195] [2020-10-26 23:27:03,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:03,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:03,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590463170] [2020-10-26 23:27:03,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:03,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:03,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:03,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:03,439 INFO L87 Difference]: Start difference. First operand 3187 states and 3677 transitions. Second operand 7 states. [2020-10-26 23:27:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:06,328 INFO L93 Difference]: Finished difference Result 6206 states and 7226 transitions. [2020-10-26 23:27:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:06,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 528 [2020-10-26 23:27:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:06,343 INFO L225 Difference]: With dead ends: 6206 [2020-10-26 23:27:06,343 INFO L226 Difference]: Without dead ends: 3391 [2020-10-26 23:27:06,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2020-10-26 23:27:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3373. [2020-10-26 23:27:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2020-10-26 23:27:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 3870 transitions. [2020-10-26 23:27:06,447 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 3870 transitions. Word has length 528 [2020-10-26 23:27:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:06,448 INFO L481 AbstractCegarLoop]: Abstraction has 3373 states and 3870 transitions. [2020-10-26 23:27:06,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 3870 transitions. [2020-10-26 23:27:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-26 23:27:06,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:06,455 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:27:06,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:27:06,455 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash 832305828, now seen corresponding path program 1 times [2020-10-26 23:27:06,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:06,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538812968] [2020-10-26 23:27:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:27:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:27:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 479 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:27:12,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538812968] [2020-10-26 23:27:12,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:12,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:12,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207132172] [2020-10-26 23:27:12,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:12,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:12,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:12,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:12,519 INFO L87 Difference]: Start difference. First operand 3373 states and 3870 transitions. Second operand 7 states. [2020-10-26 23:27:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:15,371 INFO L93 Difference]: Finished difference Result 6576 states and 7614 transitions. [2020-10-26 23:27:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:15,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2020-10-26 23:27:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:15,388 INFO L225 Difference]: With dead ends: 6576 [2020-10-26 23:27:15,389 INFO L226 Difference]: Without dead ends: 3575 [2020-10-26 23:27:15,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2020-10-26 23:27:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3557. [2020-10-26 23:27:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-10-26 23:27:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4067 transitions. [2020-10-26 23:27:15,487 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4067 transitions. Word has length 687 [2020-10-26 23:27:15,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:15,488 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 4067 transitions. [2020-10-26 23:27:15,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4067 transitions. [2020-10-26 23:27:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2020-10-26 23:27:15,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:15,497 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:27:15,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:27:15,498 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash 509764672, now seen corresponding path program 1 times [2020-10-26 23:27:15,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:15,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925084420] [2020-10-26 23:27:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 787 [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:27:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:27:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:21,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:27:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:27:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:21,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:21,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:27:21,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-10-26 23:27:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 535 proven. 145 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2020-10-26 23:27:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925084420] [2020-10-26 23:27:21,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:21,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:21,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076450676] [2020-10-26 23:27:21,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:21,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:21,494 INFO L87 Difference]: Start difference. First operand 3557 states and 4067 transitions. Second operand 7 states. [2020-10-26 23:27:22,947 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:27:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:23,502 INFO L93 Difference]: Finished difference Result 7682 states and 8970 transitions. [2020-10-26 23:27:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:23,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 763 [2020-10-26 23:27:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:23,530 INFO L225 Difference]: With dead ends: 7682 [2020-10-26 23:27:23,530 INFO L226 Difference]: Without dead ends: 4497 [2020-10-26 23:27:23,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2020-10-26 23:27:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4489. [2020-10-26 23:27:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4489 states. [2020-10-26 23:27:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 5213 transitions. [2020-10-26 23:27:23,655 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 5213 transitions. Word has length 763 [2020-10-26 23:27:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:23,657 INFO L481 AbstractCegarLoop]: Abstraction has 4489 states and 5213 transitions. [2020-10-26 23:27:23,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 5213 transitions. [2020-10-26 23:27:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-26 23:27:23,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:23,667 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:27:23,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:27:23,667 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1415038436, now seen corresponding path program 1 times [2020-10-26 23:27:23,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:23,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12526996] [2020-10-26 23:27:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:27:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:28,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:27:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:29,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:29,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:27:29,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:27:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:27:29,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:27:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:27:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:27:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-26 23:27:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 569 proven. 225 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2020-10-26 23:27:30,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12526996] [2020-10-26 23:27:30,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:30,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:27:30,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775062322] [2020-10-26 23:27:30,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:30,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:30,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:30,005 INFO L87 Difference]: Start difference. First operand 4489 states and 5213 transitions. Second operand 8 states. [2020-10-26 23:27:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:33,295 INFO L93 Difference]: Finished difference Result 9716 states and 11488 transitions. [2020-10-26 23:27:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:27:33,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 781 [2020-10-26 23:27:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:33,318 INFO L225 Difference]: With dead ends: 9716 [2020-10-26 23:27:33,318 INFO L226 Difference]: Without dead ends: 5231 [2020-10-26 23:27:33,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:27:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2020-10-26 23:27:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5227. [2020-10-26 23:27:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5227 states. [2020-10-26 23:27:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 6022 transitions. [2020-10-26 23:27:33,439 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 6022 transitions. Word has length 781 [2020-10-26 23:27:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:33,440 INFO L481 AbstractCegarLoop]: Abstraction has 5227 states and 6022 transitions. [2020-10-26 23:27:33,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 6022 transitions. [2020-10-26 23:27:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-26 23:27:33,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:33,450 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:33,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:27:33,450 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 273418644, now seen corresponding path program 1 times [2020-10-26 23:27:33,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:33,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029222670] [2020-10-26 23:27:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-26 23:27:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:38,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:38,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:38,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:39,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:39,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 23:27:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-26 23:27:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:39,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 682 proven. 82 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:27:39,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029222670] [2020-10-26 23:27:39,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:39,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:39,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183190453] [2020-10-26 23:27:39,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:39,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:39,743 INFO L87 Difference]: Start difference. First operand 5227 states and 6022 transitions. Second operand 7 states. [2020-10-26 23:27:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:41,873 INFO L93 Difference]: Finished difference Result 10088 states and 11676 transitions. [2020-10-26 23:27:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:27:41,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2020-10-26 23:27:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:41,894 INFO L225 Difference]: With dead ends: 10088 [2020-10-26 23:27:41,894 INFO L226 Difference]: Without dead ends: 5233 [2020-10-26 23:27:41,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:27:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2020-10-26 23:27:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5227. [2020-10-26 23:27:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5227 states. [2020-10-26 23:27:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 5972 transitions. [2020-10-26 23:27:42,019 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 5972 transitions. Word has length 790 [2020-10-26 23:27:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:42,020 INFO L481 AbstractCegarLoop]: Abstraction has 5227 states and 5972 transitions. [2020-10-26 23:27:42,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 5972 transitions. [2020-10-26 23:27:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-26 23:27:42,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:42,032 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:42,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:27:42,032 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash 203150496, now seen corresponding path program 1 times [2020-10-26 23:27:42,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:42,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019414033] [2020-10-26 23:27:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:27:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:27:47,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:27:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:27:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 586 proven. 72 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2020-10-26 23:27:48,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019414033] [2020-10-26 23:27:48,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:48,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:48,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234572395] [2020-10-26 23:27:48,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:48,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:48,433 INFO L87 Difference]: Start difference. First operand 5227 states and 5972 transitions. Second operand 7 states. [2020-10-26 23:27:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:50,551 INFO L93 Difference]: Finished difference Result 9902 states and 11433 transitions. [2020-10-26 23:27:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:27:50,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 860 [2020-10-26 23:27:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:50,565 INFO L225 Difference]: With dead ends: 9902 [2020-10-26 23:27:50,565 INFO L226 Difference]: Without dead ends: 4863 [2020-10-26 23:27:50,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2020-10-26 23:27:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4857. [2020-10-26 23:27:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4857 states. [2020-10-26 23:27:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 5515 transitions. [2020-10-26 23:27:50,667 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 5515 transitions. Word has length 860 [2020-10-26 23:27:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:50,668 INFO L481 AbstractCegarLoop]: Abstraction has 4857 states and 5515 transitions. [2020-10-26 23:27:50,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 5515 transitions. [2020-10-26 23:27:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-26 23:27:50,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:50,680 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 4, 3, 3, 3, 3, 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] [2020-10-26 23:27:50,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:27:50,680 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash 740589348, now seen corresponding path program 1 times [2020-10-26 23:27:50,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168826578] [2020-10-26 23:27:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:27:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:56,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:27:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:27:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:27:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:27:56,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:27:56,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:27:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:27:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:27:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:27:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2768 backedges. 1346 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:27:57,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168826578] [2020-10-26 23:27:57,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:57,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:27:57,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639037030] [2020-10-26 23:27:57,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:27:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:57,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:27:57,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:27:57,727 INFO L87 Difference]: Start difference. First operand 4857 states and 5515 transitions. Second operand 9 states. [2020-10-26 23:28:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:01,002 INFO L93 Difference]: Finished difference Result 11081 states and 12860 transitions. [2020-10-26 23:28:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:28:01,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 903 [2020-10-26 23:28:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:01,024 INFO L225 Difference]: With dead ends: 11081 [2020-10-26 23:28:01,024 INFO L226 Difference]: Without dead ends: 6561 [2020-10-26 23:28:01,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:28:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6561 states. [2020-10-26 23:28:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6561 to 6161. [2020-10-26 23:28:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-26 23:28:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 7204 transitions. [2020-10-26 23:28:01,168 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 7204 transitions. Word has length 903 [2020-10-26 23:28:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:01,169 INFO L481 AbstractCegarLoop]: Abstraction has 6161 states and 7204 transitions. [2020-10-26 23:28:01,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 7204 transitions. [2020-10-26 23:28:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-26 23:28:01,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:01,185 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 4, 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] [2020-10-26 23:28:01,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:28:01,186 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2133794092, now seen corresponding path program 1 times [2020-10-26 23:28:01,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:01,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305215005] [2020-10-26 23:28:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:28:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:06,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:28:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:28:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 1356 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:08,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305215005] [2020-10-26 23:28:08,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:08,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:08,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927523651] [2020-10-26 23:28:08,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:08,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:08,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:08,217 INFO L87 Difference]: Start difference. First operand 6161 states and 7204 transitions. Second operand 10 states. [2020-10-26 23:28:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:11,687 INFO L93 Difference]: Finished difference Result 12357 states and 14498 transitions. [2020-10-26 23:28:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:28:11,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 936 [2020-10-26 23:28:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:11,707 INFO L225 Difference]: With dead ends: 12357 [2020-10-26 23:28:11,708 INFO L226 Difference]: Without dead ends: 6535 [2020-10-26 23:28:11,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:28:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2020-10-26 23:28:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6161. [2020-10-26 23:28:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-26 23:28:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 7193 transitions. [2020-10-26 23:28:11,840 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 7193 transitions. Word has length 936 [2020-10-26 23:28:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:11,841 INFO L481 AbstractCegarLoop]: Abstraction has 6161 states and 7193 transitions. [2020-10-26 23:28:11,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 7193 transitions. [2020-10-26 23:28:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2020-10-26 23:28:11,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:11,854 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:11,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:28:11,854 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash -955101592, now seen corresponding path program 1 times [2020-10-26 23:28:11,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:11,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224185607] [2020-10-26 23:28:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:28:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:28:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:28:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 1357 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:18,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224185607] [2020-10-26 23:28:18,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:18,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:18,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439768713] [2020-10-26 23:28:18,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:18,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:18,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:18,712 INFO L87 Difference]: Start difference. First operand 6161 states and 7193 transitions. Second operand 10 states. [2020-10-26 23:28:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:22,154 INFO L93 Difference]: Finished difference Result 12361 states and 14475 transitions. [2020-10-26 23:28:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:28:22,156 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 937 [2020-10-26 23:28:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:22,176 INFO L225 Difference]: With dead ends: 12361 [2020-10-26 23:28:22,176 INFO L226 Difference]: Without dead ends: 6533 [2020-10-26 23:28:22,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:28:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2020-10-26 23:28:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6341. [2020-10-26 23:28:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6341 states. [2020-10-26 23:28:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 7340 transitions. [2020-10-26 23:28:22,308 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 7340 transitions. Word has length 937 [2020-10-26 23:28:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:22,309 INFO L481 AbstractCegarLoop]: Abstraction has 6341 states and 7340 transitions. [2020-10-26 23:28:22,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 7340 transitions. [2020-10-26 23:28:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2020-10-26 23:28:22,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:22,322 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:22,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:28:22,323 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:22,323 INFO L82 PathProgramCache]: Analyzing trace with hash -777212044, now seen corresponding path program 1 times [2020-10-26 23:28:22,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:22,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799548729] [2020-10-26 23:28:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-26 23:28:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:28:27,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:28:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:28:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:28,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:28,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:28:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:28:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1368 proven. 6 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2020-10-26 23:28:29,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799548729] [2020-10-26 23:28:29,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:29,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:28:29,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628406377] [2020-10-26 23:28:29,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:29,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:29,296 INFO L87 Difference]: Start difference. First operand 6341 states and 7340 transitions. Second operand 9 states. [2020-10-26 23:28:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:33,013 INFO L93 Difference]: Finished difference Result 13238 states and 15444 transitions. [2020-10-26 23:28:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:28:33,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 964 [2020-10-26 23:28:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:33,044 INFO L225 Difference]: With dead ends: 13238 [2020-10-26 23:28:33,044 INFO L226 Difference]: Without dead ends: 7269 [2020-10-26 23:28:33,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:28:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2020-10-26 23:28:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6899. [2020-10-26 23:28:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6899 states. [2020-10-26 23:28:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 7973 transitions. [2020-10-26 23:28:33,201 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 7973 transitions. Word has length 964 [2020-10-26 23:28:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:33,202 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 7973 transitions. [2020-10-26 23:28:33,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 7973 transitions. [2020-10-26 23:28:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-26 23:28:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:33,216 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2020-10-26 23:28:33,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:28:33,217 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1681722392, now seen corresponding path program 1 times [2020-10-26 23:28:33,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:33,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8651913] [2020-10-26 23:28:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-26 23:28:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4679 [2020-10-26 23:28:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-26 23:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:28:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:38,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:28:38,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:38,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:38,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:38,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:28:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:28:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-10-26 23:28:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 701 proven. 2 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2020-10-26 23:28:39,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8651913] [2020-10-26 23:28:39,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:39,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:39,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303206500] [2020-10-26 23:28:39,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:39,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:39,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:39,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:39,404 INFO L87 Difference]: Start difference. First operand 6899 states and 7973 transitions. Second operand 7 states. [2020-10-26 23:28:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:41,514 INFO L93 Difference]: Finished difference Result 13656 states and 15868 transitions. [2020-10-26 23:28:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:41,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-26 23:28:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:41,540 INFO L225 Difference]: With dead ends: 13656 [2020-10-26 23:28:41,540 INFO L226 Difference]: Without dead ends: 6733 [2020-10-26 23:28:41,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2020-10-26 23:28:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6509. [2020-10-26 23:28:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6509 states. [2020-10-26 23:28:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 7264 transitions. [2020-10-26 23:28:41,672 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 7264 transitions. Word has length 963 [2020-10-26 23:28:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:41,673 INFO L481 AbstractCegarLoop]: Abstraction has 6509 states and 7264 transitions. [2020-10-26 23:28:41,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 7264 transitions. [2020-10-26 23:28:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-26 23:28:41,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:41,691 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:41,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:28:41,691 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash -329086044, now seen corresponding path program 1 times [2020-10-26 23:28:41,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:41,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928202883] [2020-10-26 23:28:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:28:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:47,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:47,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:28:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:47,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:28:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:28:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:28:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:28:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:28:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3674 backedges. 2021 proven. 275 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:28:49,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928202883] [2020-10-26 23:28:49,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:49,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:28:49,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218161931] [2020-10-26 23:28:49,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:28:49,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:49,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:28:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:49,918 INFO L87 Difference]: Start difference. First operand 6509 states and 7264 transitions. Second operand 11 states. [2020-10-26 23:28:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:53,683 INFO L93 Difference]: Finished difference Result 12830 states and 14351 transitions. [2020-10-26 23:28:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:28:53,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1086 [2020-10-26 23:28:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:53,699 INFO L225 Difference]: With dead ends: 12830 [2020-10-26 23:28:53,699 INFO L226 Difference]: Without dead ends: 6693 [2020-10-26 23:28:53,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:28:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2020-10-26 23:28:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6509. [2020-10-26 23:28:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6509 states. [2020-10-26 23:28:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 7254 transitions. [2020-10-26 23:28:53,822 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 7254 transitions. Word has length 1086 [2020-10-26 23:28:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:53,823 INFO L481 AbstractCegarLoop]: Abstraction has 6509 states and 7254 transitions. [2020-10-26 23:28:53,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:28:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 7254 transitions. [2020-10-26 23:28:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-10-26 23:28:53,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:53,846 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 4, 3, 3, 3, 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] [2020-10-26 23:28:53,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:28:53,846 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -918120852, now seen corresponding path program 1 times [2020-10-26 23:28:53,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:53,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630938285] [2020-10-26 23:28:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:54,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1150 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:28:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:28:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:28:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:28:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:29:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 1085 proven. 78 refuted. 0 times theorem prover too weak. 2260 trivial. 0 not checked. [2020-10-26 23:29:03,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630938285] [2020-10-26 23:29:03,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:03,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:29:03,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716094641] [2020-10-26 23:29:03,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:29:03,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:03,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:29:03,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:29:03,664 INFO L87 Difference]: Start difference. First operand 6509 states and 7254 transitions. Second operand 13 states. [2020-10-26 23:29:04,443 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-26 23:29:04,808 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-26 23:29:05,245 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-26 23:29:05,558 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-10-26 23:29:05,939 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-26 23:29:06,318 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-26 23:29:06,679 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-10-26 23:29:07,049 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-26 23:29:07,857 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-26 23:29:08,202 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-26 23:29:08,682 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-26 23:29:09,180 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2020-10-26 23:29:09,591 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:29:09,956 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2020-10-26 23:29:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:10,364 INFO L93 Difference]: Finished difference Result 12838 states and 14350 transitions. [2020-10-26 23:29:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:29:10,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1124 [2020-10-26 23:29:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:10,385 INFO L225 Difference]: With dead ends: 12838 [2020-10-26 23:29:10,385 INFO L226 Difference]: Without dead ends: 6513 [2020-10-26 23:29:10,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:29:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6513 states. [2020-10-26 23:29:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6513 to 6507. [2020-10-26 23:29:10,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-10-26 23:29:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 7225 transitions. [2020-10-26 23:29:10,507 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 7225 transitions. Word has length 1124 [2020-10-26 23:29:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:10,508 INFO L481 AbstractCegarLoop]: Abstraction has 6507 states and 7225 transitions. [2020-10-26 23:29:10,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:29:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 7225 transitions. [2020-10-26 23:29:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2020-10-26 23:29:10,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:10,529 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:29:10,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:29:10,530 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1656229616, now seen corresponding path program 1 times [2020-10-26 23:29:10,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:10,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860624794] [2020-10-26 23:29:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1252 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 377 [2020-10-26 23:29:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:16,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:16,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:29:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:29:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:29:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:29:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:29:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:29:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:29:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4646 backedges. 2538 proven. 40 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2020-10-26 23:29:18,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860624794] [2020-10-26 23:29:18,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:18,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:18,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771672460] [2020-10-26 23:29:18,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:18,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:18,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:18,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:18,315 INFO L87 Difference]: Start difference. First operand 6507 states and 7225 transitions. Second operand 8 states. [2020-10-26 23:29:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:20,000 INFO L93 Difference]: Finished difference Result 14142 states and 16008 transitions. [2020-10-26 23:29:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:29:20,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1222 [2020-10-26 23:29:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:20,022 INFO L225 Difference]: With dead ends: 14142 [2020-10-26 23:29:20,023 INFO L226 Difference]: Without dead ends: 8007 [2020-10-26 23:29:20,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8007 states. [2020-10-26 23:29:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8007 to 7969. [2020-10-26 23:29:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7969 states. [2020-10-26 23:29:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 8976 transitions. [2020-10-26 23:29:20,177 INFO L78 Accepts]: Start accepts. Automaton has 7969 states and 8976 transitions. Word has length 1222 [2020-10-26 23:29:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:20,179 INFO L481 AbstractCegarLoop]: Abstraction has 7969 states and 8976 transitions. [2020-10-26 23:29:20,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 7969 states and 8976 transitions. [2020-10-26 23:29:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2020-10-26 23:29:20,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:20,200 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:29:20,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:29:20,200 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:20,201 INFO L82 PathProgramCache]: Analyzing trace with hash 379101216, now seen corresponding path program 1 times [2020-10-26 23:29:20,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:20,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224192760] [2020-10-26 23:29:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1259 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:23,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:23,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:23,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:29:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:29:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:24,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:29:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:29:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:29:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:29:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:29:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4697 backedges. 1052 proven. 2 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2020-10-26 23:29:25,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224192760] [2020-10-26 23:29:25,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:25,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:25,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476014821] [2020-10-26 23:29:25,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:25,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:25,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:25,318 INFO L87 Difference]: Start difference. First operand 7969 states and 8976 transitions. Second operand 7 states.