/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:29:05,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:29:05,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:29:05,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:29:05,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:29:05,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:29:05,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:29:05,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:29:05,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:29:05,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:29:05,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:29:05,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:29:05,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:29:05,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:29:05,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:29:05,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:29:05,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:29:05,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:29:05,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:29:05,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:29:05,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:29:05,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:29:05,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:29:05,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:29:05,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:29:05,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:29:05,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:29:05,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:29:05,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:29:05,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:29:05,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:29:05,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:29:05,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:29:05,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:29:05,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:29:05,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:29:05,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:29:05,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:29:05,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:29:05,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:29:05,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:29:05,925 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 00:29:05,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:29:05,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:29:05,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:29:05,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:29:05,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:29:05,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:29:05,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:29:05,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:29:06,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:29:06,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:29:06,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:29:06,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:29:06,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:29:06,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:29:06,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:29:06,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:29:06,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:29:06,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:29:06,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:29:06,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:29:06,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:29:06,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:29:06,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:29:06,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:29:06,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:29:06,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:29:06,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:29:06,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:29:06,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:29:06,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:29:06,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:29:06,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:29:06,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:29:06,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:29:06,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:29:06,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-27 00:29:06,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f0750079/9babc2dc1f404d5192d069bba7cf8976/FLAG8da1014e9 [2020-10-27 00:29:07,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:29:07,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-27 00:29:07,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f0750079/9babc2dc1f404d5192d069bba7cf8976/FLAG8da1014e9 [2020-10-27 00:29:08,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f0750079/9babc2dc1f404d5192d069bba7cf8976 [2020-10-27 00:29:08,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:29:08,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:29:08,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:08,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:29:08,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:29:08,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:08" (1/1) ... [2020-10-27 00:29:08,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407f7f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:08, skipping insertion in model container [2020-10-27 00:29:08,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:08" (1/1) ... [2020-10-27 00:29:08,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:29:08,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:29:09,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:09,544 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:29:10,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:10,247 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:29:10,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10 WrapperNode [2020-10-27 00:29:10,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:10,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:29:10,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:29:10,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:29:10,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (1/1) ... [2020-10-27 00:29:10,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:29:10,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:29:10,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:29:10,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:29:10,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (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 00:29:10,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:29:10,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:29:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:29:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:29:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:29:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:29:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:29:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:29:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:29:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:29:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:29:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:29:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:29:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:29:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:29:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:29:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:29:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:29:15,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:29:15,022 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:29:15,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:15 BoogieIcfgContainer [2020-10-27 00:29:15,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:29:15,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:29:15,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:29:15,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:29:15,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:29:08" (1/3) ... [2020-10-27 00:29:15,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e277e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:15, skipping insertion in model container [2020-10-27 00:29:15,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:10" (2/3) ... [2020-10-27 00:29:15,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e277e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:15, skipping insertion in model container [2020-10-27 00:29:15,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:15" (3/3) ... [2020-10-27 00:29:15,036 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label30.c [2020-10-27 00:29:15,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:29:15,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:29:15,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:29:15,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:29:15,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:29:15,109 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:29:15,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:29:15,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:29:15,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:29:15,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:29:15,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:29:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:29:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 00:29:15,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:15,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:15,160 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:15,168 INFO L82 PathProgramCache]: Analyzing trace with hash 791525200, now seen corresponding path program 1 times [2020-10-27 00:29:15,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:15,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326412569] [2020-10-27 00:29:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 00:29:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 00:29:15,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 00:29:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:29:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:16,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:29:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:16,170 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 00:29:16,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326412569] [2020-10-27 00:29:16,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:16,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:29:16,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126551660] [2020-10-27 00:29:16,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:29:16,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:16,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:29:16,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:29:16,200 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:29:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:25,553 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:29:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:29:25,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-27 00:29:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:25,586 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:29:25,586 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:29:25,597 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 00:29:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:29:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:29:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:29:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 00:29:25,750 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 50 [2020-10-27 00:29:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:25,752 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 00:29:25,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:29:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 00:29:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 00:29:25,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:25,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:25,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:29:25,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2083466408, now seen corresponding path program 1 times [2020-10-27 00:29:25,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:25,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943978246] [2020-10-27 00:29:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 00:29:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-27 00:29:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:29:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:29:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:27,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:29:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:29:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:29:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:29:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:27,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943978246] [2020-10-27 00:29:27,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:27,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231351692] [2020-10-27 00:29:27,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:27,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:27,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:27,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:27,459 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-27 00:29:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:38,937 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-27 00:29:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:38,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-27 00:29:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:38,959 INFO L225 Difference]: With dead ends: 4354 [2020-10-27 00:29:38,959 INFO L226 Difference]: Without dead ends: 2934 [2020-10-27 00:29:38,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-27 00:29:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-27 00:29:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-27 00:29:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-27 00:29:39,066 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 120 [2020-10-27 00:29:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:39,069 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-27 00:29:39,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-27 00:29:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 00:29:39,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:39,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:39,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:29:39,081 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash -307913552, now seen corresponding path program 1 times [2020-10-27 00:29:39,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:39,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171487164] [2020-10-27 00:29:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:29:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:40,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:40,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:40,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:29:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:40,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:40,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:40,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:40,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:29:40,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:40,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171487164] [2020-10-27 00:29:40,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:40,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:40,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025051649] [2020-10-27 00:29:40,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:40,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:40,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:40,727 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-27 00:29:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:53,020 INFO L93 Difference]: Finished difference Result 8802 states and 12016 transitions. [2020-10-27 00:29:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:53,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-27 00:29:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:53,057 INFO L225 Difference]: With dead ends: 8802 [2020-10-27 00:29:53,058 INFO L226 Difference]: Without dead ends: 5929 [2020-10-27 00:29:53,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-27 00:29:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5842. [2020-10-27 00:29:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-27 00:29:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 7282 transitions. [2020-10-27 00:29:53,277 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 7282 transitions. Word has length 140 [2020-10-27 00:29:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:53,278 INFO L481 AbstractCegarLoop]: Abstraction has 5842 states and 7282 transitions. [2020-10-27 00:29:53,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 7282 transitions. [2020-10-27 00:29:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 00:29:53,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:53,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:53,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:29:53,283 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:53,284 INFO L82 PathProgramCache]: Analyzing trace with hash -132442458, now seen corresponding path program 1 times [2020-10-27 00:29:53,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:53,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810678915] [2020-10-27 00:29:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-27 00:29:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3366 [2020-10-27 00:29:56,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:29:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:57,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:57,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:29:57,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:29:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:29:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:29:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:29:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:29:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:29:57,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810678915] [2020-10-27 00:29:57,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:57,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:57,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577290697] [2020-10-27 00:29:57,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:57,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:57,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:57,455 INFO L87 Difference]: Start difference. First operand 5842 states and 7282 transitions. Second operand 7 states. [2020-10-27 00:30:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:10,628 INFO L93 Difference]: Finished difference Result 14786 states and 18168 transitions. [2020-10-27 00:30:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:10,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-27 00:30:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:10,675 INFO L225 Difference]: With dead ends: 14786 [2020-10-27 00:30:10,675 INFO L226 Difference]: Without dead ends: 8950 [2020-10-27 00:30:10,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 00:30:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8950 states. [2020-10-27 00:30:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8950 to 8091. [2020-10-27 00:30:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-27 00:30:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 9822 transitions. [2020-10-27 00:30:10,947 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 9822 transitions. Word has length 245 [2020-10-27 00:30:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:10,949 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 9822 transitions. [2020-10-27 00:30:10,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 9822 transitions. [2020-10-27 00:30:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-27 00:30:10,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:10,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:10,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:30:10,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:10,962 INFO L82 PathProgramCache]: Analyzing trace with hash -629291968, now seen corresponding path program 1 times [2020-10-27 00:30:10,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:10,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357714978] [2020-10-27 00:30:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:16,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:16,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-27 00:30:16,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 00:30:16,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:30:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:30:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:30:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:17,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-27 00:30:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:30:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:30:17,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:30:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:30:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:17,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:30:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:18,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357714978] [2020-10-27 00:30:18,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:18,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:30:18,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118761423] [2020-10-27 00:30:18,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:30:18,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:18,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:30:18,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:30:18,273 INFO L87 Difference]: Start difference. First operand 8091 states and 9822 transitions. Second operand 8 states. [2020-10-27 00:30:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:34,036 INFO L93 Difference]: Finished difference Result 23107 states and 28928 transitions. [2020-10-27 00:30:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:34,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 447 [2020-10-27 00:30:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:34,109 INFO L225 Difference]: With dead ends: 23107 [2020-10-27 00:30:34,110 INFO L226 Difference]: Without dead ends: 15022 [2020-10-27 00:30:34,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:30:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2020-10-27 00:30:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 14834. [2020-10-27 00:30:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14834 states. [2020-10-27 00:30:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14834 states to 14834 states and 18004 transitions. [2020-10-27 00:30:34,543 INFO L78 Accepts]: Start accepts. Automaton has 14834 states and 18004 transitions. Word has length 447 [2020-10-27 00:30:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:34,544 INFO L481 AbstractCegarLoop]: Abstraction has 14834 states and 18004 transitions. [2020-10-27 00:30:34,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 14834 states and 18004 transitions. [2020-10-27 00:30:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-27 00:30:34,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:34,582 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:30:34,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:30:34,583 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1726953694, now seen corresponding path program 1 times [2020-10-27 00:30:34,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:34,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141646285] [2020-10-27 00:30:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:35,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:39,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4827 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:39,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:39,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:30:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 00:30:40,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:40,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:40,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:30:40,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:30:40,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-27 00:30:41,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:30:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:30:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:30:42,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141646285] [2020-10-27 00:30:42,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:42,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:42,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433666947] [2020-10-27 00:30:42,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:42,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:42,161 INFO L87 Difference]: Start difference. First operand 14834 states and 18004 transitions. Second operand 7 states. [2020-10-27 00:30:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:54,548 INFO L93 Difference]: Finished difference Result 35685 states and 44815 transitions. [2020-10-27 00:30:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:54,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-27 00:30:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:54,632 INFO L225 Difference]: With dead ends: 35685 [2020-10-27 00:30:54,632 INFO L226 Difference]: Without dead ends: 20857 [2020-10-27 00:30:54,670 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 00:30:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2020-10-27 00:30:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 20728. [2020-10-27 00:30:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20728 states. [2020-10-27 00:30:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20728 states to 20728 states and 25567 transitions. [2020-10-27 00:30:55,276 INFO L78 Accepts]: Start accepts. Automaton has 20728 states and 25567 transitions. Word has length 974 [2020-10-27 00:30:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:55,279 INFO L481 AbstractCegarLoop]: Abstraction has 20728 states and 25567 transitions. [2020-10-27 00:30:55,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 20728 states and 25567 transitions. [2020-10-27 00:30:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-27 00:30:55,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:55,337 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 00:30:55,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:30:55,338 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1663900456, now seen corresponding path program 1 times [2020-10-27 00:30:55,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:55,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876211765] [2020-10-27 00:30:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:56,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:00,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-27 00:31:00,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:31:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:01,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:31:01,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:01,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:01,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:31:01,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:01,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:01,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 00:31:01,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:02,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:02,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:31:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:31:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:02,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:02,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:31:02,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 330 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:31:03,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876211765] [2020-10-27 00:31:03,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:03,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:03,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972544051] [2020-10-27 00:31:03,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:03,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:03,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:03,241 INFO L87 Difference]: Start difference. First operand 20728 states and 25567 transitions. Second operand 7 states. [2020-10-27 00:31:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:17,578 INFO L93 Difference]: Finished difference Result 51710 states and 65225 transitions. [2020-10-27 00:31:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:17,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1057 [2020-10-27 00:31:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:17,715 INFO L225 Difference]: With dead ends: 51710 [2020-10-27 00:31:17,715 INFO L226 Difference]: Without dead ends: 30988 [2020-10-27 00:31:17,765 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 00:31:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30988 states. [2020-10-27 00:31:18,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30988 to 30889. [2020-10-27 00:31:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30889 states. [2020-10-27 00:31:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30889 states to 30889 states and 38780 transitions. [2020-10-27 00:31:18,639 INFO L78 Accepts]: Start accepts. Automaton has 30889 states and 38780 transitions. Word has length 1057 [2020-10-27 00:31:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:18,641 INFO L481 AbstractCegarLoop]: Abstraction has 30889 states and 38780 transitions. [2020-10-27 00:31:18,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30889 states and 38780 transitions. [2020-10-27 00:31:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-27 00:31:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:18,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:31:18,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:31:18,662 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1195853930, now seen corresponding path program 1 times [2020-10-27 00:31:18,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:18,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945928062] [2020-10-27 00:31:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:19,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:31:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:24,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 00:31:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:31:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 422 proven. 79 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-27 00:31:26,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945928062] [2020-10-27 00:31:26,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:26,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:26,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606813152] [2020-10-27 00:31:26,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:26,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:26,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:26,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:26,386 INFO L87 Difference]: Start difference. First operand 30889 states and 38780 transitions. Second operand 7 states. [2020-10-27 00:31:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:44,075 INFO L93 Difference]: Finished difference Result 70644 states and 89341 transitions. [2020-10-27 00:31:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:44,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1086 [2020-10-27 00:31:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:44,217 INFO L225 Difference]: With dead ends: 70644 [2020-10-27 00:31:44,218 INFO L226 Difference]: Without dead ends: 39761 [2020-10-27 00:31:44,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 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 00:31:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39761 states. [2020-10-27 00:31:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39761 to 38136. [2020-10-27 00:31:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38136 states. [2020-10-27 00:31:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38136 states to 38136 states and 47364 transitions. [2020-10-27 00:31:45,091 INFO L78 Accepts]: Start accepts. Automaton has 38136 states and 47364 transitions. Word has length 1086 [2020-10-27 00:31:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:45,093 INFO L481 AbstractCegarLoop]: Abstraction has 38136 states and 47364 transitions. [2020-10-27 00:31:45,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38136 states and 47364 transitions. [2020-10-27 00:31:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-10-27 00:31:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:45,111 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:31:45,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:31:45,111 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 91370654, now seen corresponding path program 1 times [2020-10-27 00:31:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:45,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338298099] [2020-10-27 00:31:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:49,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1148 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4602 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:31:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:50,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:50,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:31:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:31:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:31:51,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338298099] [2020-10-27 00:31:51,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:51,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:51,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114316905] [2020-10-27 00:31:51,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:51,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:51,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:51,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:51,980 INFO L87 Difference]: Start difference. First operand 38136 states and 47364 transitions. Second operand 7 states. [2020-10-27 00:32:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:13,110 INFO L93 Difference]: Finished difference Result 84271 states and 106827 transitions. [2020-10-27 00:32:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:13,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1124 [2020-10-27 00:32:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:13,312 INFO L225 Difference]: With dead ends: 84271 [2020-10-27 00:32:13,312 INFO L226 Difference]: Without dead ends: 46141 [2020-10-27 00:32:13,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46141 states. [2020-10-27 00:32:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46141 to 44625. [2020-10-27 00:32:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44625 states. [2020-10-27 00:32:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44625 states to 44625 states and 55052 transitions. [2020-10-27 00:32:14,575 INFO L78 Accepts]: Start accepts. Automaton has 44625 states and 55052 transitions. Word has length 1124 [2020-10-27 00:32:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:14,576 INFO L481 AbstractCegarLoop]: Abstraction has 44625 states and 55052 transitions. [2020-10-27 00:32:14,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 44625 states and 55052 transitions. [2020-10-27 00:32:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-27 00:32:14,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:14,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:32:14,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:32:14,598 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:14,598 INFO L82 PathProgramCache]: Analyzing trace with hash -868187198, now seen corresponding path program 1 times [2020-10-27 00:32:14,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:14,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686223513] [2020-10-27 00:32:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1140 [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:32:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 00:32:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:16,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:17,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:17,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:17,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:32:17,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:17,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:32:17,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:32:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:32:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:32:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:32:17,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686223513] [2020-10-27 00:32:17,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:17,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:32:17,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97331903] [2020-10-27 00:32:17,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:32:17,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:17,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:32:17,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:32:17,908 INFO L87 Difference]: Start difference. First operand 44625 states and 55052 transitions. Second operand 5 states. [2020-10-27 00:32:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:31,670 INFO L93 Difference]: Finished difference Result 89281 states and 110325 transitions. [2020-10-27 00:32:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:32:31,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1138 [2020-10-27 00:32:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:31,839 INFO L225 Difference]: With dead ends: 89281 [2020-10-27 00:32:31,839 INFO L226 Difference]: Without dead ends: 44662 [2020-10-27 00:32:31,897 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 00:32:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44662 states. [2020-10-27 00:32:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44662 to 44626. [2020-10-27 00:32:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44626 states. [2020-10-27 00:32:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44626 states to 44626 states and 53368 transitions. [2020-10-27 00:32:32,710 INFO L78 Accepts]: Start accepts. Automaton has 44626 states and 53368 transitions. Word has length 1138 [2020-10-27 00:32:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:32,711 INFO L481 AbstractCegarLoop]: Abstraction has 44626 states and 53368 transitions. [2020-10-27 00:32:32,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:32:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 44626 states and 53368 transitions. [2020-10-27 00:32:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2020-10-27 00:32:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:32,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1] [2020-10-27 00:32:32,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:32:32,732 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:32,732 INFO L82 PathProgramCache]: Analyzing trace with hash 61232740, now seen corresponding path program 1 times [2020-10-27 00:32:32,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:32,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119971346] [2020-10-27 00:32:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1261 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:32:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:32:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:32:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:32:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:32:39,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119971346] [2020-10-27 00:32:39,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020137080] [2020-10-27 00:32:39,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:39,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:39,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:39,583 INFO L87 Difference]: Start difference. First operand 44626 states and 53368 transitions. Second operand 7 states.