/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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:29:37,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:29:37,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:29:37,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:29:37,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:29:37,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:29:37,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:29:37,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:29:37,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:29:37,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:29:37,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:29:37,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:29:37,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:29:37,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:29:37,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:29:37,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:29:37,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:29:37,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:29:37,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:29:37,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:29:37,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:29:37,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:29:37,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:29:37,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:29:37,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:29:37,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:29:37,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:29:37,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:29:37,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:29:37,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:29:37,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:29:37,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:29:37,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:29:37,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:29:37,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:29:37,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:29:37,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:29:37,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:29:37,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:29:37,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:29:37,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:29:37,435 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 00:29:37,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:29:37,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:29:37,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:29:37,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:29:37,464 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:29:37,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:29:37,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:29:37,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:29:37,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:29:37,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:29:37,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:29:37,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:29:37,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:29:37,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:29:37,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:29:37,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:29:37,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:29:37,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:29:37,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:29:37,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:29:37,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:29:37,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:29:37,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:29:37,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:29:37,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:29:37,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:29:37,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:29:37,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:29:37,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:29:37,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:29:37,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:29:37,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:29:37,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:29:37,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:29:37,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:29:37,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label32.c [2020-10-27 00:29:38,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2b5d0be/5b4842d73ec449b9b4b7d0dd2183c437/FLAG57150eeae [2020-10-27 00:29:38,885 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:29:38,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label32.c [2020-10-27 00:29:38,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2b5d0be/5b4842d73ec449b9b4b7d0dd2183c437/FLAG57150eeae [2020-10-27 00:29:38,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2b5d0be/5b4842d73ec449b9b4b7d0dd2183c437 [2020-10-27 00:29:38,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:29:38,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:29:38,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:38,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:29:38,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:29:38,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:38" (1/1) ... [2020-10-27 00:29:38,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f6f4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:38, skipping insertion in model container [2020-10-27 00:29:38,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:38" (1/1) ... [2020-10-27 00:29:38,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:29:39,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:29:40,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:40,137 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:29:40,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:40,723 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:29:40,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40 WrapperNode [2020-10-27 00:29:40,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:40,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:29:40,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:29:40,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:29:40,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:40,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:40,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:40,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:41,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:41,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:41,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (1/1) ... [2020-10-27 00:29:41,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:29:41,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:29:41,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:29:41,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:29:41,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (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 00:29:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:29:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:29:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:29:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:29:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:29:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:29:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:29:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:29:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:29:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:29:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:29:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:29:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:29:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:29:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:29:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:29:45,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:29:45,911 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:29:45,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:45 BoogieIcfgContainer [2020-10-27 00:29:45,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:29:45,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:29:45,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:29:45,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:29:45,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:29:38" (1/3) ... [2020-10-27 00:29:45,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c06984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:45, skipping insertion in model container [2020-10-27 00:29:45,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:40" (2/3) ... [2020-10-27 00:29:45,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c06984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:45, skipping insertion in model container [2020-10-27 00:29:45,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:45" (3/3) ... [2020-10-27 00:29:45,927 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label32.c [2020-10-27 00:29:45,940 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:29:45,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:29:45,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:29:46,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:29:46,010 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:29:46,011 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:29:46,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:29:46,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:29:46,011 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:29:46,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:29:46,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:29:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:29:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 00:29:46,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:46,065 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] [2020-10-27 00:29:46,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1072739976, now seen corresponding path program 1 times [2020-10-27 00:29:46,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:46,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876660870] [2020-10-27 00:29:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 00:29:46,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-27 00:29:46,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 00:29:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:29:47,000 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:29:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:29:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:29:47,166 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 00:29:47,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876660870] [2020-10-27 00:29:47,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:47,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:29:47,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28607973] [2020-10-27 00:29:47,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:29:47,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:47,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:29:47,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:29:47,199 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:30:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:00,791 INFO L93 Difference]: Finished difference Result 2989 states and 5776 transitions. [2020-10-27 00:30:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:30:00,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-27 00:30:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:00,839 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:30:00,839 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:30:00,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:30:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2133. [2020-10-27 00:30:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-10-27 00:30:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3754 transitions. [2020-10-27 00:30:01,050 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3754 transitions. Word has length 35 [2020-10-27 00:30:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:01,050 INFO L481 AbstractCegarLoop]: Abstraction has 2133 states and 3754 transitions. [2020-10-27 00:30:01,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:30:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3754 transitions. [2020-10-27 00:30:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 00:30:01,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:01,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:01,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:30:01,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2090210043, now seen corresponding path program 1 times [2020-10-27 00:30:01,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:01,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451121561] [2020-10-27 00:30:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:02,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 00:30:02,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1712 [2020-10-27 00:30:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:30:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:30:02,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:30:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:03,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451121561] [2020-10-27 00:30:03,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:03,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:03,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498666478] [2020-10-27 00:30:03,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:03,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:03,313 INFO L87 Difference]: Start difference. First operand 2133 states and 3754 transitions. Second operand 7 states. [2020-10-27 00:30:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:14,050 INFO L93 Difference]: Finished difference Result 6527 states and 11592 transitions. [2020-10-27 00:30:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:14,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-27 00:30:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:14,080 INFO L225 Difference]: With dead ends: 6527 [2020-10-27 00:30:14,080 INFO L226 Difference]: Without dead ends: 4400 [2020-10-27 00:30:14,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2020-10-27 00:30:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 4316. [2020-10-27 00:30:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4316 states. [2020-10-27 00:30:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6318 transitions. [2020-10-27 00:30:14,273 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6318 transitions. Word has length 123 [2020-10-27 00:30:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:14,275 INFO L481 AbstractCegarLoop]: Abstraction has 4316 states and 6318 transitions. [2020-10-27 00:30:14,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6318 transitions. [2020-10-27 00:30:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 00:30:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:14,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:14,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:30:14,288 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash -663152995, now seen corresponding path program 1 times [2020-10-27 00:30:14,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259427186] [2020-10-27 00:30:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:30:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-27 00:30:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 00:30:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:15,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:30:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:15,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:15,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:30:15,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 00:30:15,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 00:30:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:15,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259427186] [2020-10-27 00:30:15,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:15,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:15,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737401915] [2020-10-27 00:30:15,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:15,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:15,969 INFO L87 Difference]: Start difference. First operand 4316 states and 6318 transitions. Second operand 7 states. [2020-10-27 00:30:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:25,142 INFO L93 Difference]: Finished difference Result 10339 states and 15416 transitions. [2020-10-27 00:30:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:25,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-27 00:30:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:25,185 INFO L225 Difference]: With dead ends: 10339 [2020-10-27 00:30:25,185 INFO L226 Difference]: Without dead ends: 6029 [2020-10-27 00:30:25,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:30:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2020-10-27 00:30:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5815. [2020-10-27 00:30:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2020-10-27 00:30:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 7981 transitions. [2020-10-27 00:30:25,432 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 7981 transitions. Word has length 146 [2020-10-27 00:30:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:25,433 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 7981 transitions. [2020-10-27 00:30:25,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 7981 transitions. [2020-10-27 00:30:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-27 00:30:25,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:25,437 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:25,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:30:25,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1706187414, now seen corresponding path program 1 times [2020-10-27 00:30:25,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:25,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110129348] [2020-10-27 00:30:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:28,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-27 00:30:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3414 [2020-10-27 00:30:28,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:30:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:30:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:30:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:30:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:29,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110129348] [2020-10-27 00:30:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:29,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:29,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960546944] [2020-10-27 00:30:29,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:29,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:29,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:29,673 INFO L87 Difference]: Start difference. First operand 5815 states and 7981 transitions. Second operand 7 states. [2020-10-27 00:30:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:38,810 INFO L93 Difference]: Finished difference Result 13165 states and 17680 transitions. [2020-10-27 00:30:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:30:38,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-27 00:30:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:38,844 INFO L225 Difference]: With dead ends: 13165 [2020-10-27 00:30:38,844 INFO L226 Difference]: Without dead ends: 7356 [2020-10-27 00:30:38,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:30:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2020-10-27 00:30:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 7238. [2020-10-27 00:30:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-27 00:30:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 9424 transitions. [2020-10-27 00:30:39,033 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 9424 transitions. Word has length 231 [2020-10-27 00:30:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:39,034 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 9424 transitions. [2020-10-27 00:30:39,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 9424 transitions. [2020-10-27 00:30:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-27 00:30:39,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:39,043 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:30:39,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:30:39,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 569180587, now seen corresponding path program 1 times [2020-10-27 00:30:39,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:39,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459178074] [2020-10-27 00:30:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:43,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-27 00:30:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:30:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4406 [2020-10-27 00:30:43,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:43,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:30:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:30:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:43,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:43,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:43,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:30:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:30:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:30:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 00:30:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:30:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:30:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 204 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 00:30:44,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459178074] [2020-10-27 00:30:44,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:44,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:44,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714175417] [2020-10-27 00:30:44,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:44,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:44,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:44,555 INFO L87 Difference]: Start difference. First operand 7238 states and 9424 transitions. Second operand 7 states. [2020-10-27 00:30:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:59,931 INFO L93 Difference]: Finished difference Result 14105 states and 18976 transitions. [2020-10-27 00:30:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:59,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-27 00:30:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:59,965 INFO L225 Difference]: With dead ends: 14105 [2020-10-27 00:30:59,965 INFO L226 Difference]: Without dead ends: 8131 [2020-10-27 00:30:59,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 00:30:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2020-10-27 00:31:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 7200. [2020-10-27 00:31:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7200 states. [2020-10-27 00:31:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7200 states to 7200 states and 8589 transitions. [2020-10-27 00:31:00,136 INFO L78 Accepts]: Start accepts. Automaton has 7200 states and 8589 transitions. Word has length 417 [2020-10-27 00:31:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:00,137 INFO L481 AbstractCegarLoop]: Abstraction has 7200 states and 8589 transitions. [2020-10-27 00:31:00,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7200 states and 8589 transitions. [2020-10-27 00:31:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-27 00:31:00,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:00,175 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:00,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:31:00,176 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1129444719, now seen corresponding path program 1 times [2020-10-27 00:31:00,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647446403] [2020-10-27 00:31:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4936 [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 00:31:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:05,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:31:05,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 00:31:05,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:06,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:06,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:31:06,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:06,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:06,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 00:31:06,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:31:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:07,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 00:31:07,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 00:31:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:31:08,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647446403] [2020-10-27 00:31:08,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:08,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:08,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490304671] [2020-10-27 00:31:08,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:08,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:08,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:08,017 INFO L87 Difference]: Start difference. First operand 7200 states and 8589 transitions. Second operand 7 states. [2020-10-27 00:31:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:16,846 INFO L93 Difference]: Finished difference Result 16783 states and 21312 transitions. [2020-10-27 00:31:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:16,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-27 00:31:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:16,898 INFO L225 Difference]: With dead ends: 16783 [2020-10-27 00:31:16,898 INFO L226 Difference]: Without dead ends: 12405 [2020-10-27 00:31:16,913 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 00:31:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12405 states. [2020-10-27 00:31:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12405 to 9505. [2020-10-27 00:31:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9505 states. [2020-10-27 00:31:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9505 states to 9505 states and 11636 transitions. [2020-10-27 00:31:17,197 INFO L78 Accepts]: Start accepts. Automaton has 9505 states and 11636 transitions. Word has length 980 [2020-10-27 00:31:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:17,200 INFO L481 AbstractCegarLoop]: Abstraction has 9505 states and 11636 transitions. [2020-10-27 00:31:17,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9505 states and 11636 transitions. [2020-10-27 00:31:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2020-10-27 00:31:17,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:17,217 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:31:17,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:31:17,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1759963754, now seen corresponding path program 1 times [2020-10-27 00:31:17,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:17,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530807686] [2020-10-27 00:31:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:31:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:22,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:31:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:23,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:31:23,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:23,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:23,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:23,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:23,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:23,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:31:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:24,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:31:24,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:31:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 00:31:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 270 proven. 75 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2020-10-27 00:31:25,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530807686] [2020-10-27 00:31:25,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:25,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:25,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417398386] [2020-10-27 00:31:25,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:25,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:25,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:25,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:25,033 INFO L87 Difference]: Start difference. First operand 9505 states and 11636 transitions. Second operand 7 states. [2020-10-27 00:31:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:34,133 INFO L93 Difference]: Finished difference Result 20687 states and 26270 transitions. [2020-10-27 00:31:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:34,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1056 [2020-10-27 00:31:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:34,178 INFO L225 Difference]: With dead ends: 20687 [2020-10-27 00:31:34,178 INFO L226 Difference]: Without dead ends: 12600 [2020-10-27 00:31:34,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2020-10-27 00:31:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 12508. [2020-10-27 00:31:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12508 states. [2020-10-27 00:31:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12508 states to 12508 states and 15603 transitions. [2020-10-27 00:31:34,465 INFO L78 Accepts]: Start accepts. Automaton has 12508 states and 15603 transitions. Word has length 1056 [2020-10-27 00:31:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:34,467 INFO L481 AbstractCegarLoop]: Abstraction has 12508 states and 15603 transitions. [2020-10-27 00:31:34,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 12508 states and 15603 transitions. [2020-10-27 00:31:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-27 00:31:34,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:34,485 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:31:34,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:31:34,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:34,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1638746248, now seen corresponding path program 1 times [2020-10-27 00:31:34,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:34,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413709626] [2020-10-27 00:31:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1106 [2020-10-27 00:31:39,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-27 00:31:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 00:31:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 975 [2020-10-27 00:31:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:40,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:31:40,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:31:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:31:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:41,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:41,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 00:31:41,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:31:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:31:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:31:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:31:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:31:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:31:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:31:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:31:43,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 00:31:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 967 [2020-10-27 00:31:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:31:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:31:43,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:31:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 118 proven. 253 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2020-10-27 00:31:44,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413709626] [2020-10-27 00:31:44,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:44,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:31:44,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556034147] [2020-10-27 00:31:44,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:31:44,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:31:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:31:44,101 INFO L87 Difference]: Start difference. First operand 12508 states and 15603 transitions. Second operand 8 states. [2020-10-27 00:31:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:53,713 INFO L93 Difference]: Finished difference Result 33176 states and 44350 transitions. [2020-10-27 00:31:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:31:53,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1082 [2020-10-27 00:31:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:53,797 INFO L225 Difference]: With dead ends: 33176 [2020-10-27 00:31:53,797 INFO L226 Difference]: Without dead ends: 22086 [2020-10-27 00:31:53,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:31:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22086 states. [2020-10-27 00:31:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22086 to 21813. [2020-10-27 00:31:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21813 states. [2020-10-27 00:31:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 27215 transitions. [2020-10-27 00:31:54,518 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 27215 transitions. Word has length 1082 [2020-10-27 00:31:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:54,520 INFO L481 AbstractCegarLoop]: Abstraction has 21813 states and 27215 transitions. [2020-10-27 00:31:54,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:31:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 27215 transitions. [2020-10-27 00:31:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2020-10-27 00:31:54,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:54,538 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 00:31:54,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:31:54,538 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash -945459050, now seen corresponding path program 1 times [2020-10-27 00:31:54,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:54,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813979023] [2020-10-27 00:31:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1147 [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:31:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 00:31:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:55,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:55,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:55,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:56,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:56,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:56,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:31:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:31:57,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813979023] [2020-10-27 00:31:57,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:57,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:31:57,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170455846] [2020-10-27 00:31:57,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:31:57,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:31:57,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:31:57,656 INFO L87 Difference]: Start difference. First operand 21813 states and 27215 transitions. Second operand 5 states. [2020-10-27 00:32:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:05,971 INFO L93 Difference]: Finished difference Result 42215 states and 53059 transitions. [2020-10-27 00:32:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:32:05,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1123 [2020-10-27 00:32:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:06,030 INFO L225 Difference]: With dead ends: 42215 [2020-10-27 00:32:06,030 INFO L226 Difference]: Without dead ends: 21820 [2020-10-27 00:32:06,064 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 00:32:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21820 states. [2020-10-27 00:32:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21820 to 20399. [2020-10-27 00:32:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20399 states. [2020-10-27 00:32:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20399 states to 20399 states and 23592 transitions. [2020-10-27 00:32:06,432 INFO L78 Accepts]: Start accepts. Automaton has 20399 states and 23592 transitions. Word has length 1123 [2020-10-27 00:32:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:06,433 INFO L481 AbstractCegarLoop]: Abstraction has 20399 states and 23592 transitions. [2020-10-27 00:32:06,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:32:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20399 states and 23592 transitions. [2020-10-27 00:32:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2020-10-27 00:32:06,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:06,454 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:06,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:32:06,454 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1763877491, now seen corresponding path program 1 times [2020-10-27 00:32:06,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:06,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888712066] [2020-10-27 00:32:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1172 [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:11,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:12,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:12,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:12,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:32:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:32:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1045 [2020-10-27 00:32:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:32:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 397 proven. 151 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2020-10-27 00:32:13,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888712066] [2020-10-27 00:32:13,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:13,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:13,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105914521] [2020-10-27 00:32:13,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:13,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:13,634 INFO L87 Difference]: Start difference. First operand 20399 states and 23592 transitions. Second operand 7 states. [2020-10-27 00:32:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:27,430 INFO L93 Difference]: Finished difference Result 48159 states and 56376 transitions. [2020-10-27 00:32:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:27,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1146 [2020-10-27 00:32:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:27,505 INFO L225 Difference]: With dead ends: 48159 [2020-10-27 00:32:27,506 INFO L226 Difference]: Without dead ends: 29178 [2020-10-27 00:32:27,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29178 states. [2020-10-27 00:32:28,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29178 to 28332. [2020-10-27 00:32:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28332 states. [2020-10-27 00:32:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28332 states to 28332 states and 32487 transitions. [2020-10-27 00:32:28,239 INFO L78 Accepts]: Start accepts. Automaton has 28332 states and 32487 transitions. Word has length 1146 [2020-10-27 00:32:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:28,241 INFO L481 AbstractCegarLoop]: Abstraction has 28332 states and 32487 transitions. [2020-10-27 00:32:28,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 28332 states and 32487 transitions. [2020-10-27 00:32:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2020-10-27 00:32:28,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:28,276 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:28,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:32:28,277 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:28,278 INFO L82 PathProgramCache]: Analyzing trace with hash 992090202, now seen corresponding path program 1 times [2020-10-27 00:32:28,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:28,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112751260] [2020-10-27 00:32:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:33,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:33,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1317 [2020-10-27 00:32:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:32:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 00:32:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:32:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:33,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:33,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:32:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:32:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1188 [2020-10-27 00:32:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:32:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1815 backedges. 553 proven. 151 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2020-10-27 00:32:35,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112751260] [2020-10-27 00:32:35,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:35,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:35,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721543004] [2020-10-27 00:32:35,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:35,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:35,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:35,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:35,889 INFO L87 Difference]: Start difference. First operand 28332 states and 32487 transitions. Second operand 7 states. [2020-10-27 00:32:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:46,410 INFO L93 Difference]: Finished difference Result 68103 states and 80139 transitions. [2020-10-27 00:32:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:32:46,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1289 [2020-10-27 00:32:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:46,504 INFO L225 Difference]: With dead ends: 68103 [2020-10-27 00:32:46,505 INFO L226 Difference]: Without dead ends: 41189 [2020-10-27 00:32:46,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:32:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41189 states. [2020-10-27 00:32:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41189 to 37545. [2020-10-27 00:32:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37545 states. [2020-10-27 00:32:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37545 states to 37545 states and 42680 transitions. [2020-10-27 00:32:47,236 INFO L78 Accepts]: Start accepts. Automaton has 37545 states and 42680 transitions. Word has length 1289 [2020-10-27 00:32:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:47,238 INFO L481 AbstractCegarLoop]: Abstraction has 37545 states and 42680 transitions. [2020-10-27 00:32:47,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 37545 states and 42680 transitions. [2020-10-27 00:32:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1316 [2020-10-27 00:32:47,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:47,268 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:47,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:32:47,269 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 80660430, now seen corresponding path program 1 times [2020-10-27 00:32:47,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:47,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524848566] [2020-10-27 00:32:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:52,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:52,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1343 [2020-10-27 00:32:52,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:32:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 00:32:52,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:32:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:52,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:52,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:52,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:32:53,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:53,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:32:53,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:53,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:32:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:32:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:32:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1200 [2020-10-27 00:32:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:53,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 457 proven. 174 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-27 00:32:54,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524848566] [2020-10-27 00:32:54,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:54,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:54,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897326215] [2020-10-27 00:32:54,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:54,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:54,473 INFO L87 Difference]: Start difference. First operand 37545 states and 42680 transitions. Second operand 7 states. [2020-10-27 00:33:06,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:06,205 INFO L93 Difference]: Finished difference Result 78744 states and 89674 transitions. [2020-10-27 00:33:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:06,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1315 [2020-10-27 00:33:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:06,284 INFO L225 Difference]: With dead ends: 78744 [2020-10-27 00:33:06,284 INFO L226 Difference]: Without dead ends: 42617 [2020-10-27 00:33:06,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42617 states. [2020-10-27 00:33:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42617 to 42564. [2020-10-27 00:33:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-27 00:33:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 47479 transitions. [2020-10-27 00:33:06,984 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 47479 transitions. Word has length 1315 [2020-10-27 00:33:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:06,985 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 47479 transitions. [2020-10-27 00:33:06,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 47479 transitions. [2020-10-27 00:33:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1320 [2020-10-27 00:33:07,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:07,011 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:07,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:33:07,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1247435080, now seen corresponding path program 1 times [2020-10-27 00:33:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:07,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656588988] [2020-10-27 00:33:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking...