/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/Problem18_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:31:48,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:31:48,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:31:48,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:31:48,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:31:48,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:31:48,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:31:48,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:31:48,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:31:48,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:31:48,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:31:48,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:31:48,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:31:48,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:31:48,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:31:48,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:31:48,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:31:48,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:31:48,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:31:48,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:31:48,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:31:48,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:31:48,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:31:48,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:31:48,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:31:48,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:31:48,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:31:48,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:31:48,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:31:48,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:31:48,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:31:48,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:31:48,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:31:48,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:31:48,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:31:48,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:31:48,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:31:48,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:31:48,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:31:48,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:31:48,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:31:48,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:31:48,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:31:48,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:31:48,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:31:48,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:31:48,798 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:31:48,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:31:48,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:31:48,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:31:48,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:31:48,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:31:48,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:31:48,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:31:48,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:31:48,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:31:48,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:31:48,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:31:48,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:31:48,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:31:48,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:31:48,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:31:48,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:31:48,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:31:48,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:31:48,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:31:48,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:31:48,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:31:48,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:31:48,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:31:48,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:31:48,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:31:49,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:31:49,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:31:49,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:31:49,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:31:49,217 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:31:49,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-27 00:31:49,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68e34788/6a943645224e43ba83b7d6c23091d125/FLAG6a0b155e3 [2020-10-27 00:31:50,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:31:50,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-27 00:31:50,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68e34788/6a943645224e43ba83b7d6c23091d125/FLAG6a0b155e3 [2020-10-27 00:31:50,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68e34788/6a943645224e43ba83b7d6c23091d125 [2020-10-27 00:31:50,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:31:50,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:31:50,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:31:50,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:31:50,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:31:50,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:31:50" (1/1) ... [2020-10-27 00:31:50,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2ecc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:50, skipping insertion in model container [2020-10-27 00:31:50,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:31:50" (1/1) ... [2020-10-27 00:31:50,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:31:51,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:31:52,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:31:52,274 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:31:52,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:31:52,849 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:31:52,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52 WrapperNode [2020-10-27 00:31:52,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:31:52,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:31:52,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:31:52,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:31:52,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:52,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:52,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:52,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:53,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:53,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:53,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... [2020-10-27 00:31:53,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:31:53,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:31:53,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:31:53,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:31:53,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:31:53,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:31:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:31:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:31:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:31:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:31:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:31:53,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:31:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:31:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:31:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:31:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:31:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:31:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:31:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:31:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:31:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:31:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:31:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:31:57,362 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:31:57,362 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:31:57,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:31:57 BoogieIcfgContainer [2020-10-27 00:31:57,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:31:57,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:31:57,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:31:57,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:31:57,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:31:50" (1/3) ... [2020-10-27 00:31:57,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c54ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:31:57, skipping insertion in model container [2020-10-27 00:31:57,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:31:52" (2/3) ... [2020-10-27 00:31:57,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c54ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:31:57, skipping insertion in model container [2020-10-27 00:31:57,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:31:57" (3/3) ... [2020-10-27 00:31:57,382 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2020-10-27 00:31:57,395 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:31:57,402 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:31:57,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:31:57,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:31:57,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:31:57,475 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:31:57,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:31:57,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:31:57,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:31:57,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:31:57,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:31:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:31:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 00:31:57,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:57,533 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] [2020-10-27 00:31:57,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash 524400232, now seen corresponding path program 1 times [2020-10-27 00:31:57,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:57,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800591479] [2020-10-27 00:31:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 00:31:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-27 00:31:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 00:31:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:31:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:31:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:31:58,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800591479] [2020-10-27 00:31:58,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:31:58,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:31:58,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197235057] [2020-10-27 00:31:58,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:31:58,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:31:58,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:31:58,537 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:32:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:08,239 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:32:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:32:08,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 00:32:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:08,273 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:32:08,274 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:32:08,286 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 [2020-10-27 00:32:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:32:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:32:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:32:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 00:32:08,486 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 27 [2020-10-27 00:32:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:08,487 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 00:32:08,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:32:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 00:32:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 00:32:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:08,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:08,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:32:08,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash 567417793, now seen corresponding path program 1 times [2020-10-27 00:32:08,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148539718] [2020-10-27 00:32:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:09,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 00:32:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-27 00:32:09,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:32:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:09,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:32:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 00:32:09,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:32:09,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 00:32:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:32:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:32:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148539718] [2020-10-27 00:32:10,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:10,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:32:10,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179810696] [2020-10-27 00:32:10,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:10,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:10,105 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-27 00:32:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:22,582 INFO L93 Difference]: Finished difference Result 4326 states and 6788 transitions. [2020-10-27 00:32:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:22,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-27 00:32:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:22,601 INFO L225 Difference]: With dead ends: 4326 [2020-10-27 00:32:22,601 INFO L226 Difference]: Without dead ends: 2906 [2020-10-27 00:32:22,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:32:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-10-27 00:32:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2864. [2020-10-27 00:32:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2020-10-27 00:32:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 3948 transitions. [2020-10-27 00:32:22,701 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 3948 transitions. Word has length 97 [2020-10-27 00:32:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:22,702 INFO L481 AbstractCegarLoop]: Abstraction has 2864 states and 3948 transitions. [2020-10-27 00:32:22,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 3948 transitions. [2020-10-27 00:32:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 00:32:22,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:22,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:22,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:32:22,706 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 139254497, now seen corresponding path program 1 times [2020-10-27 00:32:22,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:22,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400300181] [2020-10-27 00:32:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:24,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:24,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:32:24,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:24,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-27 00:32:24,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:32:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:24,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:32:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 00:32:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:25,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400300181] [2020-10-27 00:32:25,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:25,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:32:25,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712534263] [2020-10-27 00:32:25,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:25,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:25,047 INFO L87 Difference]: Start difference. First operand 2864 states and 3948 transitions. Second operand 7 states. [2020-10-27 00:32:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:35,273 INFO L93 Difference]: Finished difference Result 6494 states and 8763 transitions. [2020-10-27 00:32:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:32:35,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-27 00:32:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:35,295 INFO L225 Difference]: With dead ends: 6494 [2020-10-27 00:32:35,296 INFO L226 Difference]: Without dead ends: 3636 [2020-10-27 00:32:35,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:32:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2020-10-27 00:32:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3594. [2020-10-27 00:32:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-27 00:32:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4726 transitions. [2020-10-27 00:32:35,407 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4726 transitions. Word has length 124 [2020-10-27 00:32:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:35,408 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 4726 transitions. [2020-10-27 00:32:35,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4726 transitions. [2020-10-27 00:32:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 00:32:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:35,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:35,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:32:35,415 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:35,416 INFO L82 PathProgramCache]: Analyzing trace with hash 6572733, now seen corresponding path program 1 times [2020-10-27 00:32:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:35,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327601061] [2020-10-27 00:32:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 00:32:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 00:32:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:32:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:32:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:32:36,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 00:32:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:32:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:36,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327601061] [2020-10-27 00:32:36,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:36,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:32:36,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794527711] [2020-10-27 00:32:36,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:36,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:36,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:36,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:36,927 INFO L87 Difference]: Start difference. First operand 3594 states and 4726 transitions. Second operand 7 states. [2020-10-27 00:32:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:48,956 INFO L93 Difference]: Finished difference Result 8035 states and 11220 transitions. [2020-10-27 00:32:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:48,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-27 00:32:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:48,989 INFO L225 Difference]: With dead ends: 8035 [2020-10-27 00:32:48,989 INFO L226 Difference]: Without dead ends: 5149 [2020-10-27 00:32:48,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5149 states. [2020-10-27 00:32:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5149 to 5056. [2020-10-27 00:32:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5056 states. [2020-10-27 00:32:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6157 transitions. [2020-10-27 00:32:49,158 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6157 transitions. Word has length 159 [2020-10-27 00:32:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:49,160 INFO L481 AbstractCegarLoop]: Abstraction has 5056 states and 6157 transitions. [2020-10-27 00:32:49,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6157 transitions. [2020-10-27 00:32:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 00:32:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:49,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:49,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:32:49,171 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1004782016, now seen corresponding path program 1 times [2020-10-27 00:32:49,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:49,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317385770] [2020-10-27 00:32:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:51,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 00:32:51,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-27 00:32:51,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:32:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:32:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:51,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:51,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:51,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:51,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:51,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:32:51,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:32:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:32:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:32:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 00:32:51,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:32:52,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317385770] [2020-10-27 00:32:52,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:52,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:32:52,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141282354] [2020-10-27 00:32:52,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:32:52,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:32:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:32:52,379 INFO L87 Difference]: Start difference. First operand 5056 states and 6157 transitions. Second operand 6 states. [2020-10-27 00:32:52,843 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 00:33:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:00,771 INFO L93 Difference]: Finished difference Result 8896 states and 11079 transitions. [2020-10-27 00:33:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:33:00,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-27 00:33:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:00,797 INFO L225 Difference]: With dead ends: 8896 [2020-10-27 00:33:00,798 INFO L226 Difference]: Without dead ends: 4392 [2020-10-27 00:33:00,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:33:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2020-10-27 00:33:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4330. [2020-10-27 00:33:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4330 states. [2020-10-27 00:33:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 4923 transitions. [2020-10-27 00:33:00,918 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 4923 transitions. Word has length 310 [2020-10-27 00:33:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:00,919 INFO L481 AbstractCegarLoop]: Abstraction has 4330 states and 4923 transitions. [2020-10-27 00:33:00,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:33:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 4923 transitions. [2020-10-27 00:33:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-27 00:33:00,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:00,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:00,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:33:00,939 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1014665824, now seen corresponding path program 1 times [2020-10-27 00:33:00,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:00,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488588191] [2020-10-27 00:33:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 669 [2020-10-27 00:33:06,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 00:33:06,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 00:33:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 636 [2020-10-27 00:33:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:06,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:33:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:07,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:07,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:33:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:08,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:08,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:33:08,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:08,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:08,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:08,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:33:08,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:33:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:33:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:33:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 39 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:33:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488588191] [2020-10-27 00:33:10,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:10,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:10,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237035481] [2020-10-27 00:33:10,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:33:10,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:33:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:33:10,746 INFO L87 Difference]: Start difference. First operand 4330 states and 4923 transitions. Second operand 8 states. [2020-10-27 00:33:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:19,228 INFO L93 Difference]: Finished difference Result 7475 states and 8695 transitions. [2020-10-27 00:33:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:33:19,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 651 [2020-10-27 00:33:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:19,250 INFO L225 Difference]: With dead ends: 7475 [2020-10-27 00:33:19,251 INFO L226 Difference]: Without dead ends: 4563 [2020-10-27 00:33:19,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:33:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2020-10-27 00:33:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 4339. [2020-10-27 00:33:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4339 states. [2020-10-27 00:33:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 4923 transitions. [2020-10-27 00:33:19,367 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 4923 transitions. Word has length 651 [2020-10-27 00:33:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:19,369 INFO L481 AbstractCegarLoop]: Abstraction has 4339 states and 4923 transitions. [2020-10-27 00:33:19,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:33:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 4923 transitions. [2020-10-27 00:33:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-27 00:33:19,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:19,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:19,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:33:19,405 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1671824681, now seen corresponding path program 1 times [2020-10-27 00:33:19,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:19,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548081025] [2020-10-27 00:33:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4754 [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:33:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:33:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:24,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:33:24,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:25,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:25,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:33:25,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:33:25,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:33:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:33:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:33:25,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:33:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:33:26,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548081025] [2020-10-27 00:33:26,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:26,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:26,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912064068] [2020-10-27 00:33:26,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:26,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:26,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:26,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:26,417 INFO L87 Difference]: Start difference. First operand 4339 states and 4923 transitions. Second operand 7 states. [2020-10-27 00:33:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:35,895 INFO L93 Difference]: Finished difference Result 10362 states and 12315 transitions. [2020-10-27 00:33:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:35,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 951 [2020-10-27 00:33:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:35,929 INFO L225 Difference]: With dead ends: 10362 [2020-10-27 00:33:35,929 INFO L226 Difference]: Without dead ends: 7441 [2020-10-27 00:33:35,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2020-10-27 00:33:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 7354. [2020-10-27 00:33:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7354 states. [2020-10-27 00:33:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8356 transitions. [2020-10-27 00:33:36,117 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8356 transitions. Word has length 951 [2020-10-27 00:33:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:36,119 INFO L481 AbstractCegarLoop]: Abstraction has 7354 states and 8356 transitions. [2020-10-27 00:33:36,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8356 transitions. [2020-10-27 00:33:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-27 00:33:36,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:36,169 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:36,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:33:36,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1687623954, now seen corresponding path program 1 times [2020-10-27 00:33:36,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:36,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668984308] [2020-10-27 00:33:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:33:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:41,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:33:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:33:42,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:42,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:33:42,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 00:33:42,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:33:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:33:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:33:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:33:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 238 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:33:43,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668984308] [2020-10-27 00:33:43,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:43,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:43,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556289413] [2020-10-27 00:33:43,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:43,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:43,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:43,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:43,461 INFO L87 Difference]: Start difference. First operand 7354 states and 8356 transitions. Second operand 7 states. [2020-10-27 00:33:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:52,533 INFO L93 Difference]: Finished difference Result 19360 states and 22940 transitions. [2020-10-27 00:33:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:52,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-27 00:33:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:52,594 INFO L225 Difference]: With dead ends: 19360 [2020-10-27 00:33:52,594 INFO L226 Difference]: Without dead ends: 13424 [2020-10-27 00:33:52,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2020-10-27 00:33:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 13293. [2020-10-27 00:33:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13293 states. [2020-10-27 00:33:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13293 states to 13293 states and 15467 transitions. [2020-10-27 00:33:52,903 INFO L78 Accepts]: Start accepts. Automaton has 13293 states and 15467 transitions. Word has length 1034 [2020-10-27 00:33:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:52,905 INFO L481 AbstractCegarLoop]: Abstraction has 13293 states and 15467 transitions. [2020-10-27 00:33:52,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 13293 states and 15467 transitions. [2020-10-27 00:33:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-27 00:33:52,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:52,923 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:52,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:33:52,923 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:52,924 INFO L82 PathProgramCache]: Analyzing trace with hash 849231478, now seen corresponding path program 1 times [2020-10-27 00:33:52,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:52,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717723141] [2020-10-27 00:33:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:54,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-27 00:33:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-27 00:33:54,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:33:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 00:33:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:55,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:33:55,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:55,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:55,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:55,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:33:55,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:33:56,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717723141] [2020-10-27 00:33:56,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:56,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:33:56,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591504013] [2020-10-27 00:33:56,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:33:56,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:56,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:33:56,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:33:56,282 INFO L87 Difference]: Start difference. First operand 13293 states and 15467 transitions. Second operand 5 states. [2020-10-27 00:34:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:04,831 INFO L93 Difference]: Finished difference Result 30855 states and 37220 transitions. [2020-10-27 00:34:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:34:04,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1115 [2020-10-27 00:34:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:04,896 INFO L225 Difference]: With dead ends: 30855 [2020-10-27 00:34:04,897 INFO L226 Difference]: Without dead ends: 18980 [2020-10-27 00:34:04,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:34:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18980 states. [2020-10-27 00:34:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18980 to 18968. [2020-10-27 00:34:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18968 states. [2020-10-27 00:34:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18968 states to 18968 states and 21697 transitions. [2020-10-27 00:34:05,355 INFO L78 Accepts]: Start accepts. Automaton has 18968 states and 21697 transitions. Word has length 1115 [2020-10-27 00:34:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:05,358 INFO L481 AbstractCegarLoop]: Abstraction has 18968 states and 21697 transitions. [2020-10-27 00:34:05,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:34:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 18968 states and 21697 transitions. [2020-10-27 00:34:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-27 00:34:05,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:05,380 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:05,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:34:05,381 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -15626797, now seen corresponding path program 1 times [2020-10-27 00:34:05,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:05,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546106882] [2020-10-27 00:34:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1164 [2020-10-27 00:34:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:34:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 00:34:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:34:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:34:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:10,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:34:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:34:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:11,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:11,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:11,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:11,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:34:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:34:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:34:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:34:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:12,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:34:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1045 [2020-10-27 00:34:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:12,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:12,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:34:12,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:34:12,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:34:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 357 proven. 151 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2020-10-27 00:34:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546106882] [2020-10-27 00:34:13,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:13,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:13,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871792448] [2020-10-27 00:34:13,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:13,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:13,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:13,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:13,274 INFO L87 Difference]: Start difference. First operand 18968 states and 21697 transitions. Second operand 7 states. [2020-10-27 00:34:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:23,359 INFO L93 Difference]: Finished difference Result 39585 states and 45556 transitions. [2020-10-27 00:34:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:34:23,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1138 [2020-10-27 00:34:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:23,428 INFO L225 Difference]: With dead ends: 39585 [2020-10-27 00:34:23,429 INFO L226 Difference]: Without dead ends: 22035 [2020-10-27 00:34:23,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:34:23,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22035 states. [2020-10-27 00:34:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22035 to 21907. [2020-10-27 00:34:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21907 states. [2020-10-27 00:34:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21907 states to 21907 states and 24905 transitions. [2020-10-27 00:34:23,899 INFO L78 Accepts]: Start accepts. Automaton has 21907 states and 24905 transitions. Word has length 1138 [2020-10-27 00:34:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:23,900 INFO L481 AbstractCegarLoop]: Abstraction has 21907 states and 24905 transitions. [2020-10-27 00:34:23,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21907 states and 24905 transitions. [2020-10-27 00:34:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2020-10-27 00:34:23,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:23,922 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:23,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:34:23,923 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash 813403632, now seen corresponding path program 1 times [2020-10-27 00:34:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:23,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406602870] [2020-10-27 00:34:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1171 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:34:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:34:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:29,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:29,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:29,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:29,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:34:29,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:29,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:34:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:30,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:30,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:34:30,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:34:30,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:34:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:34:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:30,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:34:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:34:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:34:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-27 00:34:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 357 proven. 151 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-27 00:34:31,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406602870] [2020-10-27 00:34:31,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:31,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:31,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200856979] [2020-10-27 00:34:31,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:31,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:31,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:31,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:31,386 INFO L87 Difference]: Start difference. First operand 21907 states and 24905 transitions. Second operand 7 states. [2020-10-27 00:34:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:46,138 INFO L93 Difference]: Finished difference Result 51172 states and 58596 transitions. [2020-10-27 00:34:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:34:46,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1145 [2020-10-27 00:34:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:46,220 INFO L225 Difference]: With dead ends: 51172 [2020-10-27 00:34:46,220 INFO L226 Difference]: Without dead ends: 30683 [2020-10-27 00:34:46,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:34:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30683 states. [2020-10-27 00:34:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30683 to 30539. [2020-10-27 00:34:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30539 states. [2020-10-27 00:34:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30539 states to 30539 states and 34273 transitions. [2020-10-27 00:34:46,852 INFO L78 Accepts]: Start accepts. Automaton has 30539 states and 34273 transitions. Word has length 1145 [2020-10-27 00:34:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:46,854 INFO L481 AbstractCegarLoop]: Abstraction has 30539 states and 34273 transitions. [2020-10-27 00:34:46,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 30539 states and 34273 transitions. [2020-10-27 00:34:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2020-10-27 00:34:46,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:46,885 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:46,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:34:46,886 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1365498426, now seen corresponding path program 1 times [2020-10-27 00:34:46,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:46,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955742570] [2020-10-27 00:34:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1309 [2020-10-27 00:34:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:34:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 00:34:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:34:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:34:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:34:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:53,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:34:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:53,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:34:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:34:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:34:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:34:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:34:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:34:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1188 [2020-10-27 00:34:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:34:53,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 505 proven. 151 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2020-10-27 00:34:54,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955742570] [2020-10-27 00:34:54,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:54,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:54,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337107830] [2020-10-27 00:34:54,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:54,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:54,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:54,628 INFO L87 Difference]: Start difference. First operand 30539 states and 34273 transitions. Second operand 7 states. [2020-10-27 00:35:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:05,584 INFO L93 Difference]: Finished difference Result 62611 states and 70617 transitions. [2020-10-27 00:35:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:35:05,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1281 [2020-10-27 00:35:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:05,674 INFO L225 Difference]: With dead ends: 62611 [2020-10-27 00:35:05,675 INFO L226 Difference]: Without dead ends: 33490 [2020-10-27 00:35:05,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:35:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33490 states. [2020-10-27 00:35:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33490 to 33405. [2020-10-27 00:35:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33405 states. [2020-10-27 00:35:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33405 states to 33405 states and 37460 transitions. [2020-10-27 00:35:06,359 INFO L78 Accepts]: Start accepts. Automaton has 33405 states and 37460 transitions. Word has length 1281 [2020-10-27 00:35:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:06,361 INFO L481 AbstractCegarLoop]: Abstraction has 33405 states and 37460 transitions. [2020-10-27 00:35:06,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 33405 states and 37460 transitions. [2020-10-27 00:35:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2020-10-27 00:35:06,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:06,391 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:06,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:35:06,392 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1984681682, now seen corresponding path program 1 times [2020-10-27 00:35:06,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:06,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070855096] [2020-10-27 00:35:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1321 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:35:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:12,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:35:12,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:12,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:13,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:35:13,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:35:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:35:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:35:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:13,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:35:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:35:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:13,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:13,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:13,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1200 [2020-10-27 00:35:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:13,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1812 backedges. 409 proven. 160 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2020-10-27 00:35:13,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070855096] [2020-10-27 00:35:13,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:13,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:13,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166818716] [2020-10-27 00:35:13,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:13,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:13,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:13,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:13,976 INFO L87 Difference]: Start difference. First operand 33405 states and 37460 transitions. Second operand 7 states. [2020-10-27 00:35:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:27,214 INFO L93 Difference]: Finished difference Result 76236 states and 86819 transitions. [2020-10-27 00:35:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:35:27,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1293 [2020-10-27 00:35:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:27,331 INFO L225 Difference]: With dead ends: 76236 [2020-10-27 00:35:27,331 INFO L226 Difference]: Without dead ends: 44249 [2020-10-27 00:35:27,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:35:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44249 states. [2020-10-27 00:35:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44249 to 44158. [2020-10-27 00:35:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44158 states. [2020-10-27 00:35:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44158 states to 44158 states and 49384 transitions. [2020-10-27 00:35:28,270 INFO L78 Accepts]: Start accepts. Automaton has 44158 states and 49384 transitions. Word has length 1293 [2020-10-27 00:35:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:28,272 INFO L481 AbstractCegarLoop]: Abstraction has 44158 states and 49384 transitions. [2020-10-27 00:35:28,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 44158 states and 49384 transitions. [2020-10-27 00:35:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2020-10-27 00:35:28,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:28,298 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:28,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:35:28,299 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash 634540092, now seen corresponding path program 1 times [2020-10-27 00:35:28,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:28,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549863456] [2020-10-27 00:35:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:28,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking...