/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:34:18,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:34:18,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:34:18,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:34:18,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:34:18,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:34:18,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:34:18,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:34:18,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:34:18,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:34:18,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:34:18,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:34:18,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:34:18,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:34:18,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:34:18,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:34:18,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:34:18,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:34:18,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:34:18,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:34:18,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:34:18,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:34:18,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:34:18,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:34:18,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:34:18,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:34:18,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:34:18,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:34:18,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:34:18,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:34:18,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:34:18,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:34:18,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:34:18,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:34:18,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:34:18,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:34:18,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:34:18,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:34:18,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:34:18,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:34:18,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:34:18,354 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 00:34:18,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:34:18,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:34:18,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:34:18,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:34:18,408 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:34:18,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:34:18,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:34:18,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:34:18,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:34:18,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:34:18,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:34:18,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:34:18,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:34:18,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:34:18,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:34:18,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:34:18,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:34:18,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:34:18,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:34:18,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:34:18,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:34:18,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:34:18,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:34:18,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:34:18,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:34:18,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:34:18,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:34:18,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:34:18,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:34:18,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:34:18,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:34:18,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:34:18,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:34:18,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:34:18,921 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:34:18,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2020-10-27 00:34:19,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc58222a3/5ec4402018ad42f8a153c3855d694bf9/FLAGbb68b7572 [2020-10-27 00:34:20,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:34:20,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2020-10-27 00:34:20,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc58222a3/5ec4402018ad42f8a153c3855d694bf9/FLAGbb68b7572 [2020-10-27 00:34:20,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc58222a3/5ec4402018ad42f8a153c3855d694bf9 [2020-10-27 00:34:20,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:34:20,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:34:20,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:34:20,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:34:20,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:34:20,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:34:20" (1/1) ... [2020-10-27 00:34:20,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:20, skipping insertion in model container [2020-10-27 00:34:20,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:34:20" (1/1) ... [2020-10-27 00:34:20,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:34:20,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:34:21,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:34:21,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:34:22,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:34:22,411 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:34:22,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22 WrapperNode [2020-10-27 00:34:22,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:34:22,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:34:22,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:34:22,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:34:22,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (1/1) ... [2020-10-27 00:34:22,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:34:22,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:34:22,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:34:22,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:34:22,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (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 00:34:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:34:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:34:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:34:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:34:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:34:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:34:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:34:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:34:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:34:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:34:27,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:34:27,617 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:34:27,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:34:27 BoogieIcfgContainer [2020-10-27 00:34:27,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:34:27,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:34:27,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:34:27,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:34:27,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:34:20" (1/3) ... [2020-10-27 00:34:27,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6aacf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:34:27, skipping insertion in model container [2020-10-27 00:34:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:34:22" (2/3) ... [2020-10-27 00:34:27,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6aacf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:34:27, skipping insertion in model container [2020-10-27 00:34:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:34:27" (3/3) ... [2020-10-27 00:34:27,633 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2020-10-27 00:34:27,647 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:34:27,653 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:34:27,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:34:27,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:34:27,712 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:34:27,712 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:34:27,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:34:27,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:34:27,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:34:27,713 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:34:27,713 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:34:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:34:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 00:34:27,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:27,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:27,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:27,768 INFO L82 PathProgramCache]: Analyzing trace with hash 468760328, now seen corresponding path program 1 times [2020-10-27 00:34:27,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:27,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94100292] [2020-10-27 00:34:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:28,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:34:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-27 00:34:28,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:34:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 00:34:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:34:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:28,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:28,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:34:28,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:29,030 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 00:34:29,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94100292] [2020-10-27 00:34:29,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:34:29,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:34:29,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339775686] [2020-10-27 00:34:29,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:34:29,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:29,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:34:29,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:34:29,071 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:34:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:38,459 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 00:34:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:34:38,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 00:34:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:38,489 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:34:38,490 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:34:38,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:34:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:34:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 00:34:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 00:34:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 00:34:38,636 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 67 [2020-10-27 00:34:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:38,636 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 00:34:38,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:34:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 00:34:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 00:34:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:38,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:38,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:34:38,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1851620919, now seen corresponding path program 1 times [2020-10-27 00:34:38,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:38,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829763615] [2020-10-27 00:34:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 00:34:39,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:34:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-27 00:34:39,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:34:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:34:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:34:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:39,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:34:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:34:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:34:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:34:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:34:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:34:40,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829763615] [2020-10-27 00:34:40,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:34:40,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:34:40,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553359637] [2020-10-27 00:34:40,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:40,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:40,275 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-27 00:34:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:52,005 INFO L93 Difference]: Finished difference Result 4365 states and 7125 transitions. [2020-10-27 00:34:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:34:52,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-27 00:34:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:52,026 INFO L225 Difference]: With dead ends: 4365 [2020-10-27 00:34:52,027 INFO L226 Difference]: Without dead ends: 2942 [2020-10-27 00:34:52,032 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 00:34:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-27 00:34:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2020-10-27 00:34:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2020-10-27 00:34:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3959 transitions. [2020-10-27 00:34:52,127 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3959 transitions. Word has length 136 [2020-10-27 00:34:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:52,128 INFO L481 AbstractCegarLoop]: Abstraction has 2878 states and 3959 transitions. [2020-10-27 00:34:52,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3959 transitions. [2020-10-27 00:34:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 00:34:52,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:52,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:34:52,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:34:52,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash 52924261, now seen corresponding path program 1 times [2020-10-27 00:34:52,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:52,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674663243] [2020-10-27 00:34:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:34:52,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 00:34:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:34:52,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:53,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:34:53,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:34:53,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:34:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:34:53,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674663243] [2020-10-27 00:34:53,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:34:53,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:34:53,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511324329] [2020-10-27 00:34:53,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:53,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:53,217 INFO L87 Difference]: Start difference. First operand 2878 states and 3959 transitions. Second operand 7 states. [2020-10-27 00:35:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:05,225 INFO L93 Difference]: Finished difference Result 8001 states and 11143 transitions. [2020-10-27 00:35:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:35:05,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-27 00:35:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:05,255 INFO L225 Difference]: With dead ends: 8001 [2020-10-27 00:35:05,255 INFO L226 Difference]: Without dead ends: 5129 [2020-10-27 00:35:05,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:35:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2020-10-27 00:35:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 5073. [2020-10-27 00:35:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5073 states. [2020-10-27 00:35:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6815 transitions. [2020-10-27 00:35:05,413 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6815 transitions. Word has length 139 [2020-10-27 00:35:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:05,413 INFO L481 AbstractCegarLoop]: Abstraction has 5073 states and 6815 transitions. [2020-10-27 00:35:05,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6815 transitions. [2020-10-27 00:35:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 00:35:05,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:05,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:35:05,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:35:05,417 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1550931703, now seen corresponding path program 1 times [2020-10-27 00:35:05,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:05,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754396045] [2020-10-27 00:35:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:06,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:06,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 00:35:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:35:06,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:06,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:06,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:35:06,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:35:06,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:35:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:35:06,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754396045] [2020-10-27 00:35:06,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:35:06,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:35:06,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205872706] [2020-10-27 00:35:06,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:06,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:06,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:06,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:06,835 INFO L87 Difference]: Start difference. First operand 5073 states and 6815 transitions. Second operand 7 states. [2020-10-27 00:35:17,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:17,045 INFO L93 Difference]: Finished difference Result 11742 states and 15476 transitions. [2020-10-27 00:35:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:35:17,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-27 00:35:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:17,082 INFO L225 Difference]: With dead ends: 11742 [2020-10-27 00:35:17,082 INFO L226 Difference]: Without dead ends: 6675 [2020-10-27 00:35:17,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:35:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2020-10-27 00:35:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 6551. [2020-10-27 00:35:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6551 states. [2020-10-27 00:35:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 8378 transitions. [2020-10-27 00:35:17,278 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 8378 transitions. Word has length 157 [2020-10-27 00:35:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:17,279 INFO L481 AbstractCegarLoop]: Abstraction has 6551 states and 8378 transitions. [2020-10-27 00:35:17,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 8378 transitions. [2020-10-27 00:35:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 00:35:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:17,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:35:17,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:35:17,282 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash 159800321, now seen corresponding path program 1 times [2020-10-27 00:35:17,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64099639] [2020-10-27 00:35:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:19,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:35:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:19,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:35:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:35:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:35:20,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64099639] [2020-10-27 00:35:20,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:35:20,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:35:20,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087496431] [2020-10-27 00:35:20,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:20,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:20,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:20,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:20,464 INFO L87 Difference]: Start difference. First operand 6551 states and 8378 transitions. Second operand 7 states. [2020-10-27 00:35:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:31,585 INFO L93 Difference]: Finished difference Result 11868 states and 15781 transitions. [2020-10-27 00:35:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:35:31,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-27 00:35:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:31,622 INFO L225 Difference]: With dead ends: 11868 [2020-10-27 00:35:31,622 INFO L226 Difference]: Without dead ends: 6735 [2020-10-27 00:35:31,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:35:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2020-10-27 00:35:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 6566. [2020-10-27 00:35:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6566 states. [2020-10-27 00:35:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 8392 transitions. [2020-10-27 00:35:31,830 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 8392 transitions. Word has length 164 [2020-10-27 00:35:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:31,830 INFO L481 AbstractCegarLoop]: Abstraction has 6566 states and 8392 transitions. [2020-10-27 00:35:31,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 8392 transitions. [2020-10-27 00:35:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-27 00:35:31,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:31,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:31,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:35:31,838 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:31,838 INFO L82 PathProgramCache]: Analyzing trace with hash 270206304, now seen corresponding path program 1 times [2020-10-27 00:35:31,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:31,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330600193] [2020-10-27 00:35:31,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:36,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 00:35:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4797 [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-27 00:35:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:36,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:36,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:36,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:35:36,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:35:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-27 00:35:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:35:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:35:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:37,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:35:37,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 00:35:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:35:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:35:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 21 proven. 190 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:35:38,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330600193] [2020-10-27 00:35:38,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:38,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:35:38,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44315321] [2020-10-27 00:35:38,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:35:38,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:35:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:35:38,223 INFO L87 Difference]: Start difference. First operand 6566 states and 8392 transitions. Second operand 9 states. [2020-10-27 00:35:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:56,994 INFO L93 Difference]: Finished difference Result 16380 states and 22177 transitions. [2020-10-27 00:35:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 00:35:56,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 350 [2020-10-27 00:35:56,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:57,052 INFO L225 Difference]: With dead ends: 16380 [2020-10-27 00:35:57,053 INFO L226 Difference]: Without dead ends: 11106 [2020-10-27 00:35:57,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:35:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11106 states. [2020-10-27 00:35:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11106 to 11014. [2020-10-27 00:35:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11014 states. [2020-10-27 00:35:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11014 states to 11014 states and 13219 transitions. [2020-10-27 00:35:57,375 INFO L78 Accepts]: Start accepts. Automaton has 11014 states and 13219 transitions. Word has length 350 [2020-10-27 00:35:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:57,377 INFO L481 AbstractCegarLoop]: Abstraction has 11014 states and 13219 transitions. [2020-10-27 00:35:57,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:35:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11014 states and 13219 transitions. [2020-10-27 00:35:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-27 00:35:57,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:57,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:35:57,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:35:57,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1088930119, now seen corresponding path program 1 times [2020-10-27 00:35:57,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:57,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361611095] [2020-10-27 00:35:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:01,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:01,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-27 00:36:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:36:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4379 [2020-10-27 00:36:01,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:36:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:36:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:02,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:36:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 00:36:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:36:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:36:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:02,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:02,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:02,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:36:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:02,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:36:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:02,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:36:02,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:36:02,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:36:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 300 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 00:36:03,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361611095] [2020-10-27 00:36:03,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:03,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:36:03,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980949612] [2020-10-27 00:36:03,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:36:03,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:36:03,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:36:03,283 INFO L87 Difference]: Start difference. First operand 11014 states and 13219 transitions. Second operand 6 states. [2020-10-27 00:36:04,525 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 00:36:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:12,506 INFO L93 Difference]: Finished difference Result 21594 states and 26089 transitions. [2020-10-27 00:36:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:36:12,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 444 [2020-10-27 00:36:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:12,538 INFO L225 Difference]: With dead ends: 21594 [2020-10-27 00:36:12,538 INFO L226 Difference]: Without dead ends: 11004 [2020-10-27 00:36:12,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:36:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11004 states. [2020-10-27 00:36:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11004 to 10945. [2020-10-27 00:36:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10945 states. [2020-10-27 00:36:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10945 states to 10945 states and 12433 transitions. [2020-10-27 00:36:12,794 INFO L78 Accepts]: Start accepts. Automaton has 10945 states and 12433 transitions. Word has length 444 [2020-10-27 00:36:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:12,795 INFO L481 AbstractCegarLoop]: Abstraction has 10945 states and 12433 transitions. [2020-10-27 00:36:12,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:36:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 10945 states and 12433 transitions. [2020-10-27 00:36:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-27 00:36:12,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:12,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:12,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:36:12,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash -834556185, now seen corresponding path program 1 times [2020-10-27 00:36:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570364332] [2020-10-27 00:36:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 00:36:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 661 [2020-10-27 00:36:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:18,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:36:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:36:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-27 00:36:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:36:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:36:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:36:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-27 00:36:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:36:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:36:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:20,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:20,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:36:20,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:36:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:36:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:21,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 00:36:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:36:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:36:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:36:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 182 proven. 245 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 00:36:22,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570364332] [2020-10-27 00:36:22,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:22,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:36:22,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421059660] [2020-10-27 00:36:22,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:36:22,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:22,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:36:22,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:36:22,871 INFO L87 Difference]: Start difference. First operand 10945 states and 12433 transitions. Second operand 8 states. [2020-10-27 00:36:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:32,609 INFO L93 Difference]: Finished difference Result 20553 states and 23598 transitions. [2020-10-27 00:36:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:36:32,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 785 [2020-10-27 00:36:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:32,654 INFO L225 Difference]: With dead ends: 20553 [2020-10-27 00:36:32,654 INFO L226 Difference]: Without dead ends: 11026 [2020-10-27 00:36:32,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:36:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11026 states. [2020-10-27 00:36:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11026 to 10950. [2020-10-27 00:36:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10950 states. [2020-10-27 00:36:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 12441 transitions. [2020-10-27 00:36:32,923 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 12441 transitions. Word has length 785 [2020-10-27 00:36:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:32,924 INFO L481 AbstractCegarLoop]: Abstraction has 10950 states and 12441 transitions. [2020-10-27 00:36:32,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:36:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 12441 transitions. [2020-10-27 00:36:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-27 00:36:32,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:32,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:36:32,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:36:32,966 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1638728074, now seen corresponding path program 1 times [2020-10-27 00:36:32,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:32,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064927833] [2020-10-27 00:36:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:38,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:38,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 921 [2020-10-27 00:36:38,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 00:36:38,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 00:36:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 912 [2020-10-27 00:36:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:38,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:36:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:40,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:36:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-27 00:36:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:36:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:36:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:40,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:36:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:36:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:41,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:36:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:41,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:36:41,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:36:41,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:36:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-27 00:36:42,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064927833] [2020-10-27 00:36:42,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:42,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:36:42,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522356464] [2020-10-27 00:36:42,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:42,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:42,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:42,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:42,555 INFO L87 Difference]: Start difference. First operand 10950 states and 12441 transitions. Second operand 7 states. [2020-10-27 00:36:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:55,953 INFO L93 Difference]: Finished difference Result 29873 states and 34933 transitions. [2020-10-27 00:36:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:36:55,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 901 [2020-10-27 00:36:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:56,010 INFO L225 Difference]: With dead ends: 29873 [2020-10-27 00:36:56,010 INFO L226 Difference]: Without dead ends: 20341 [2020-10-27 00:36:56,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:36:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20341 states. [2020-10-27 00:36:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20341 to 16775. [2020-10-27 00:36:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16775 states. [2020-10-27 00:36:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16775 states to 16775 states and 19065 transitions. [2020-10-27 00:36:56,365 INFO L78 Accepts]: Start accepts. Automaton has 16775 states and 19065 transitions. Word has length 901 [2020-10-27 00:36:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:56,367 INFO L481 AbstractCegarLoop]: Abstraction has 16775 states and 19065 transitions. [2020-10-27 00:36:56,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 16775 states and 19065 transitions. [2020-10-27 00:36:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-27 00:36:56,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:56,385 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:56,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:36:56,385 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:56,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:56,386 INFO L82 PathProgramCache]: Analyzing trace with hash -797392204, now seen corresponding path program 1 times [2020-10-27 00:36:56,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:56,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020226856] [2020-10-27 00:36:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:01,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1135 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:37:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:02,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:02,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:37:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:37:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:37:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:37:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:37:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:37:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:37:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 490 proven. 87 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 00:37:04,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020226856] [2020-10-27 00:37:04,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:04,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:04,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348831015] [2020-10-27 00:37:04,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:04,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:04,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:04,156 INFO L87 Difference]: Start difference. First operand 16775 states and 19065 transitions. Second operand 7 states. [2020-10-27 00:37:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:15,720 INFO L93 Difference]: Finished difference Result 35217 states and 40379 transitions. [2020-10-27 00:37:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:15,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1111 [2020-10-27 00:37:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:15,779 INFO L225 Difference]: With dead ends: 35217 [2020-10-27 00:37:15,779 INFO L226 Difference]: Without dead ends: 19860 [2020-10-27 00:37:15,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19860 states. [2020-10-27 00:37:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19860 to 19792. [2020-10-27 00:37:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19792 states. [2020-10-27 00:37:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19792 states to 19792 states and 22455 transitions. [2020-10-27 00:37:16,179 INFO L78 Accepts]: Start accepts. Automaton has 19792 states and 22455 transitions. Word has length 1111 [2020-10-27 00:37:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:16,181 INFO L481 AbstractCegarLoop]: Abstraction has 19792 states and 22455 transitions. [2020-10-27 00:37:16,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19792 states and 22455 transitions. [2020-10-27 00:37:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-10-27 00:37:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:16,200 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:16,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:37:16,200 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1995667639, now seen corresponding path program 1 times [2020-10-27 00:37:16,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:16,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139454159] [2020-10-27 00:37:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1142 [2020-10-27 00:37:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:37:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:22,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:37:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:37:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:37:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:22,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:22,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:22,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:37:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 490 proven. 87 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-10-27 00:37:23,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139454159] [2020-10-27 00:37:23,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:23,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:23,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240017758] [2020-10-27 00:37:23,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:23,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:23,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:23,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:23,799 INFO L87 Difference]: Start difference. First operand 19792 states and 22455 transitions. Second operand 7 states. [2020-10-27 00:37:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:40,548 INFO L93 Difference]: Finished difference Result 46258 states and 54195 transitions. [2020-10-27 00:37:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:40,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1118 [2020-10-27 00:37:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:40,626 INFO L225 Difference]: With dead ends: 46258 [2020-10-27 00:37:40,627 INFO L226 Difference]: Without dead ends: 27884 [2020-10-27 00:37:40,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27884 states. [2020-10-27 00:37:41,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27884 to 27779. [2020-10-27 00:37:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27779 states. [2020-10-27 00:37:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27779 states to 27779 states and 31236 transitions. [2020-10-27 00:37:41,372 INFO L78 Accepts]: Start accepts. Automaton has 27779 states and 31236 transitions. Word has length 1118 [2020-10-27 00:37:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:41,373 INFO L481 AbstractCegarLoop]: Abstraction has 27779 states and 31236 transitions. [2020-10-27 00:37:41,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27779 states and 31236 transitions. [2020-10-27 00:37:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-27 00:37:41,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:41,396 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:37:41,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:37:41,397 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1309466139, now seen corresponding path program 1 times [2020-10-27 00:37:41,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:41,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996841825] [2020-10-27 00:37:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1225 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:37:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:46,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:37:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:37:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:37:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:37:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:37:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-27 00:37:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 00:37:48,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:37:48,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 00:37:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 493 proven. 157 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-27 00:37:48,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996841825] [2020-10-27 00:37:48,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:48,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:48,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427859678] [2020-10-27 00:37:48,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:48,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:48,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:48,999 INFO L87 Difference]: Start difference. First operand 27779 states and 31236 transitions. Second operand 7 states.