/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=DEEPEST --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/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:03:36,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:03:36,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:03:36,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:03:36,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:03:36,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:03:36,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:03:36,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:03:36,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:03:36,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:03:36,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:03:36,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:03:36,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:03:36,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:03:36,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:03:36,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:03:36,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:03:36,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:03:36,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:03:36,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:03:36,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:03:36,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:03:36,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:03:36,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:03:36,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:03:36,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:03:36,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:03:36,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:03:36,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:03:36,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:03:36,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:03:36,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:03:36,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:03:36,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:03:36,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:03:36,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:03:36,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:03:36,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:03:36,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:03:36,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:03:36,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:03:36,225 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 23:03:36,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:03:36,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:03:36,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:03:36,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:03:36,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:03:36,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:03:36,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:03:36,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:03:36,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:03:36,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:03:36,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:03:36,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:03:36,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:03:36,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:03:36,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:03:36,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:03:36,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:03:36,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:03:36,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:03:36,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:03:36,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:03:36,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:03:36,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:03:36,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:03:36,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:03:36,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:03:36,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:03:36,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:03:36,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:03:36,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:03:36,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:03:36,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:03:36,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:03:36,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:03:36,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:03:36,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:36,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/379f596b3/26b97bc6c7674aab84b3877cd70de1b4/FLAG79bd99591 [2020-10-27 23:03:37,644 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:03:37,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:37,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/379f596b3/26b97bc6c7674aab84b3877cd70de1b4/FLAG79bd99591 [2020-10-27 23:03:37,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/379f596b3/26b97bc6c7674aab84b3877cd70de1b4 [2020-10-27 23:03:37,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:03:38,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:03:38,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:03:38,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:03:38,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:03:38,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:03:37" (1/1) ... [2020-10-27 23:03:38,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d5afb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38, skipping insertion in model container [2020-10-27 23:03:38,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:03:37" (1/1) ... [2020-10-27 23:03:38,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:03:38,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:03:38,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:03:38,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:03:38,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:03:38,460 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:03:38,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38 WrapperNode [2020-10-27 23:03:38,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:03:38,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:03:38,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:03:38,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:03:38,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (1/1) ... [2020-10-27 23:03:38,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:03:38,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:03:38,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:03:38,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:03:38,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (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 23:03:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:03:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:03:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:03:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:03:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:03:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:03:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:03:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:03:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:03:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:03:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:03:38,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:03:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:03:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:03:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:03:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:03:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:03:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:03:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:03:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:03:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:03:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:03:39,323 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:03:39,323 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:03:39,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:03:39 BoogieIcfgContainer [2020-10-27 23:03:39,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:03:39,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:03:39,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:03:39,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:03:39,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:03:37" (1/3) ... [2020-10-27 23:03:39,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230b0ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:03:39, skipping insertion in model container [2020-10-27 23:03:39,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:38" (2/3) ... [2020-10-27 23:03:39,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230b0ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:03:39, skipping insertion in model container [2020-10-27 23:03:39,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:03:39" (3/3) ... [2020-10-27 23:03:39,337 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:39,353 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:03:39,360 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:03:39,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:03:39,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:03:39,454 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:03:39,454 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:03:39,455 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:03:39,455 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:03:39,455 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:03:39,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:03:39,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:03:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-10-27 23:03:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:03:39,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:39,502 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] [2020-10-27 23:03:39,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:39,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:39,509 INFO L82 PathProgramCache]: Analyzing trace with hash -710978234, now seen corresponding path program 1 times [2020-10-27 23:03:39,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:39,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879178954] [2020-10-27 23:03:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:03:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:03:40,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-27 23:03:40,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:03:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:03:40,455 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:03:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:03:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:03:40,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:03:40,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:03:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:03:40,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:03:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:03:40,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:03:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:40,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:03:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:40,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:40,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:03:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:40,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:03:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:40,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:03:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:40,763 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 23:03:40,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879178954] [2020-10-27 23:03:40,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:03:40,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:03:40,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285329481] [2020-10-27 23:03:40,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:03:40,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:03:40,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:03:40,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:03:40,790 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 7 states. [2020-10-27 23:03:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:03:41,827 INFO L93 Difference]: Finished difference Result 232 states and 341 transitions. [2020-10-27 23:03:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:03:41,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 23:03:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:03:41,840 INFO L225 Difference]: With dead ends: 232 [2020-10-27 23:03:41,840 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 23:03:41,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:03:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 23:03:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-27 23:03:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 23:03:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2020-10-27 23:03:41,903 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 57 [2020-10-27 23:03:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:03:41,904 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2020-10-27 23:03:41,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:03:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2020-10-27 23:03:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:03:41,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:41,907 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] [2020-10-27 23:03:41,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:03:41,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1534601220, now seen corresponding path program 1 times [2020-10-27 23:03:41,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:41,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811763870] [2020-10-27 23:03:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:03:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:03:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-27 23:03:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:03:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:03:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:03:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:42,752 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:03:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:03:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:03:42,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:03:42,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:03:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:03:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:03:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:03:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:03:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:42,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:03:42,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:03:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:42,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:42,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:03:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:03:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:43,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:43,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:03:43,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:03:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:03:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:43,047 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 23:03:43,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811763870] [2020-10-27 23:03:43,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:03:43,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:03:43,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882696987] [2020-10-27 23:03:43,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:03:43,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:03:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:03:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:03:43,054 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand 11 states. [2020-10-27 23:03:43,279 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:03:43,454 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:03:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:03:45,108 INFO L93 Difference]: Finished difference Result 234 states and 342 transitions. [2020-10-27 23:03:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:03:45,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 23:03:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:03:45,112 INFO L225 Difference]: With dead ends: 234 [2020-10-27 23:03:45,113 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 23:03:45,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 23:03:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 23:03:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 126. [2020-10-27 23:03:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 23:03:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2020-10-27 23:03:45,140 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 57 [2020-10-27 23:03:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:03:45,140 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2020-10-27 23:03:45,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:03:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2020-10-27 23:03:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:03:45,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:45,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:03:45,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:03:45,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 200587290, now seen corresponding path program 1 times [2020-10-27 23:03:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:45,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788075200] [2020-10-27 23:03:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:03:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 23:03:50,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:03:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:03:50,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:03:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:03:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:03:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:03:50,439 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:03:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:03:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:03:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:03:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:03:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:03:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:03:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:03:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:50,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:03:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:03:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:03:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:03:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:03:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:03:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:03:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:03:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:03:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:03:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:03:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:03:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:50,780 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 23:03:50,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788075200] [2020-10-27 23:03:50,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:03:50,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:03:50,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161235454] [2020-10-27 23:03:50,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:03:50,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:03:50,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:03:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:03:50,784 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand 10 states. [2020-10-27 23:03:51,035 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:03:53,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:03:53,089 INFO L93 Difference]: Finished difference Result 297 states and 408 transitions. [2020-10-27 23:03:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:03:53,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 23:03:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:03:53,094 INFO L225 Difference]: With dead ends: 297 [2020-10-27 23:03:53,094 INFO L226 Difference]: Without dead ends: 209 [2020-10-27 23:03:53,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:03:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-27 23:03:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2020-10-27 23:03:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-27 23:03:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 270 transitions. [2020-10-27 23:03:53,123 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 270 transitions. Word has length 80 [2020-10-27 23:03:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:03:53,124 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 270 transitions. [2020-10-27 23:03:53,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:03:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 270 transitions. [2020-10-27 23:03:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 23:03:53,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:53,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:03:53,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:03:53,136 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1931537424, now seen corresponding path program 1 times [2020-10-27 23:03:53,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:53,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643031269] [2020-10-27 23:03:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:03:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:03:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 23:03:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:03:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:03:58,422 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:03:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:03:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:03:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:03:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 23:03:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:03:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:03:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:03:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:03:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:03:58,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:03:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:03:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:03:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:03:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:03:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:03:58,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:03:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:03:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:03:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 23:03:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:58,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,761 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 23:03:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643031269] [2020-10-27 23:03:58,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:03:58,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:03:58,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823967138] [2020-10-27 23:03:58,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:03:58,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:03:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:03:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:03:58,765 INFO L87 Difference]: Start difference. First operand 199 states and 270 transitions. Second operand 10 states. [2020-10-27 23:03:58,978 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:01,014 INFO L93 Difference]: Finished difference Result 509 states and 710 transitions. [2020-10-27 23:04:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:01,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 23:04:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:01,018 INFO L225 Difference]: With dead ends: 509 [2020-10-27 23:04:01,018 INFO L226 Difference]: Without dead ends: 348 [2020-10-27 23:04:01,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-27 23:04:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 333. [2020-10-27 23:04:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-27 23:04:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 460 transitions. [2020-10-27 23:04:01,079 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 460 transitions. Word has length 81 [2020-10-27 23:04:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:01,080 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 460 transitions. [2020-10-27 23:04:01,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 460 transitions. [2020-10-27 23:04:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 23:04:01,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:01,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:01,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:04:01,085 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1313995112, now seen corresponding path program 1 times [2020-10-27 23:04:01,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:01,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142407861] [2020-10-27 23:04:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:03,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:03,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 23:04:03,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 23:04:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-27 23:04:03,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:04:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:04:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:03,915 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:03,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:03,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:03,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:03,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:04:03,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:04,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:04,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:04:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:04,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:04,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:04,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:04,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:04,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:04:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:04,159 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 23:04:04,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142407861] [2020-10-27 23:04:04,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:04,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:04,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132115547] [2020-10-27 23:04:04,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:04,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:04,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:04,162 INFO L87 Difference]: Start difference. First operand 333 states and 460 transitions. Second operand 10 states. [2020-10-27 23:04:04,411 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:05,037 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-27 23:04:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:06,521 INFO L93 Difference]: Finished difference Result 895 states and 1252 transitions. [2020-10-27 23:04:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:06,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 23:04:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:06,533 INFO L225 Difference]: With dead ends: 895 [2020-10-27 23:04:06,533 INFO L226 Difference]: Without dead ends: 600 [2020-10-27 23:04:06,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-27 23:04:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 577. [2020-10-27 23:04:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-27 23:04:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 800 transitions. [2020-10-27 23:04:06,623 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 800 transitions. Word has length 82 [2020-10-27 23:04:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 800 transitions. [2020-10-27 23:04:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 800 transitions. [2020-10-27 23:04:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 23:04:06,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:06,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:06,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:04:06,625 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1357684812, now seen corresponding path program 1 times [2020-10-27 23:04:06,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:06,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716895279] [2020-10-27 23:04:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:04:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1233 [2020-10-27 23:04:07,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:04:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:04:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,098 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:08,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 23:04:08,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:04:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:08,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:08,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:04:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:04:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:08,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:08,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:08,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:08,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:08,365 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 23:04:08,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716895279] [2020-10-27 23:04:08,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:08,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:08,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195993992] [2020-10-27 23:04:08,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:08,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:08,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:08,368 INFO L87 Difference]: Start difference. First operand 577 states and 800 transitions. Second operand 10 states. [2020-10-27 23:04:08,612 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:10,773 INFO L93 Difference]: Finished difference Result 1591 states and 2212 transitions. [2020-10-27 23:04:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:10,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-27 23:04:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:10,781 INFO L225 Difference]: With dead ends: 1591 [2020-10-27 23:04:10,781 INFO L226 Difference]: Without dead ends: 1052 [2020-10-27 23:04:10,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-27 23:04:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1017. [2020-10-27 23:04:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-27 23:04:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1400 transitions. [2020-10-27 23:04:10,877 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1400 transitions. Word has length 83 [2020-10-27 23:04:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:10,877 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1400 transitions. [2020-10-27 23:04:10,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1400 transitions. [2020-10-27 23:04:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:04:10,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:10,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:10,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:04:10,879 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:10,880 INFO L82 PathProgramCache]: Analyzing trace with hash -715495540, now seen corresponding path program 1 times [2020-10-27 23:04:10,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:10,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634798667] [2020-10-27 23:04:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:13,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:13,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:04:13,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-27 23:04:13,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 23:04:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:04:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 23:04:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:13,841 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:13,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:13,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:13,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:13,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:13,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:13,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:04:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:04:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:04:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:04:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:14,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:04:14,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:04:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:14,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:04:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:14,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:04:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:14,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:14,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:14,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:04:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:04:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:14,351 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 23:04:14,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634798667] [2020-10-27 23:04:14,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:14,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 23:04:14,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006629411] [2020-10-27 23:04:14,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 23:04:14,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:14,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 23:04:14,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-27 23:04:14,355 INFO L87 Difference]: Start difference. First operand 1017 states and 1400 transitions. Second operand 16 states. [2020-10-27 23:04:14,600 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:14,829 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:15,059 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:15,313 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:04:16,520 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:04:17,361 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 23:04:17,833 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:04:18,391 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-10-27 23:04:18,842 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 23:04:19,289 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-27 23:04:19,770 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 23:04:20,806 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-27 23:04:21,978 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 23:04:22,114 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:04:22,256 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 23:04:23,437 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 23:04:23,589 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-27 23:04:23,944 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 23:04:24,463 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:04:24,840 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 23:04:25,015 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 23:04:25,510 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 23:04:26,129 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 23:04:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:27,314 INFO L93 Difference]: Finished difference Result 10668 states and 15098 transitions. [2020-10-27 23:04:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 23:04:27,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-27 23:04:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:27,381 INFO L225 Difference]: With dead ends: 10668 [2020-10-27 23:04:27,381 INFO L226 Difference]: Without dead ends: 9689 [2020-10-27 23:04:27,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1136, Invalid=4414, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 23:04:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9689 states. [2020-10-27 23:04:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9689 to 6985. [2020-10-27 23:04:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-10-27 23:04:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9760 transitions. [2020-10-27 23:04:28,208 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9760 transitions. Word has length 84 [2020-10-27 23:04:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:28,209 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 9760 transitions. [2020-10-27 23:04:28,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 23:04:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9760 transitions. [2020-10-27 23:04:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:04:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:28,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:28,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:04:28,211 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash 570671784, now seen corresponding path program 1 times [2020-10-27 23:04:28,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:28,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566430782] [2020-10-27 23:04:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:04:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:04:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:04:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,447 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:04:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:04:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:04:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:04:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:04:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:04:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:04:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,673 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 23:04:29,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566430782] [2020-10-27 23:04:29,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:29,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:04:29,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133338860] [2020-10-27 23:04:29,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:04:29,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:04:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:04:29,675 INFO L87 Difference]: Start difference. First operand 6985 states and 9760 transitions. Second operand 13 states. [2020-10-27 23:04:30,815 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:31,072 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:31,340 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:31,587 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:04:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:32,667 INFO L93 Difference]: Finished difference Result 9052 states and 12874 transitions. [2020-10-27 23:04:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:04:32,668 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 23:04:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:32,730 INFO L225 Difference]: With dead ends: 9052 [2020-10-27 23:04:32,730 INFO L226 Difference]: Without dead ends: 9049 [2020-10-27 23:04:32,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:04:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9049 states. [2020-10-27 23:04:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9049 to 7849. [2020-10-27 23:04:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7849 states. [2020-10-27 23:04:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7849 states to 7849 states and 10624 transitions. [2020-10-27 23:04:33,697 INFO L78 Accepts]: Start accepts. Automaton has 7849 states and 10624 transitions. Word has length 85 [2020-10-27 23:04:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:33,698 INFO L481 AbstractCegarLoop]: Abstraction has 7849 states and 10624 transitions. [2020-10-27 23:04:33,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:04:33,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7849 states and 10624 transitions. [2020-10-27 23:04:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:04:33,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:33,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:33,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:04:33,700 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash -772907980, now seen corresponding path program 1 times [2020-10-27 23:04:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:33,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512963694] [2020-10-27 23:04:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:04:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 23:04:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:34,919 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:34,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:04:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:04:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:04:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:04:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:35,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:04:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:04:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:04:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:04:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:04:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:04:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:04:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:35,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:35,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:35,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:35,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:35,260 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 23:04:35,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512963694] [2020-10-27 23:04:35,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:35,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 23:04:35,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065561276] [2020-10-27 23:04:35,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 23:04:35,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:35,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 23:04:35,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 23:04:35,263 INFO L87 Difference]: Start difference. First operand 7849 states and 10624 transitions. Second operand 15 states. [2020-10-27 23:04:35,545 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:04:35,846 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:04:36,362 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:04:36,931 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:04:37,209 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:04:37,441 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 23:04:38,289 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:04:38,599 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:04:38,846 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:39,100 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:04:39,386 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:39,875 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:40,124 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:04:41,423 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:41,683 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:04:41,920 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:42,194 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:04:42,466 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:04:42,778 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:04:43,170 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:04:43,439 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:04:43,727 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:04:43,992 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:04:44,249 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:04:44,509 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:04:45,333 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:04:45,595 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:05:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:02,758 INFO L93 Difference]: Finished difference Result 89644 states and 125636 transitions. [2020-10-27 23:05:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 23:05:02,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-27 23:05:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:03,468 INFO L225 Difference]: With dead ends: 89644 [2020-10-27 23:05:03,468 INFO L226 Difference]: Without dead ends: 81833 [2020-10-27 23:05:03,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7338 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 23:05:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81833 states. [2020-10-27 23:05:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81833 to 80689. [2020-10-27 23:05:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80689 states. [2020-10-27 23:05:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80689 states to 80689 states and 104408 transitions. [2020-10-27 23:05:12,331 INFO L78 Accepts]: Start accepts. Automaton has 80689 states and 104408 transitions. Word has length 86 [2020-10-27 23:05:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:12,332 INFO L481 AbstractCegarLoop]: Abstraction has 80689 states and 104408 transitions. [2020-10-27 23:05:12,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 23:05:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 80689 states and 104408 transitions. [2020-10-27 23:05:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 23:05:12,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:12,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:12,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:05:12,334 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:12,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1356410875, now seen corresponding path program 1 times [2020-10-27 23:05:12,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:12,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644844750] [2020-10-27 23:05:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:05:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 23:05:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:12,783 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:12,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:05:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:05:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:05:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:05:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:05:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:05:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:13,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:05:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:05:13,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:05:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:05:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:05:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:13,073 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 23:05:13,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644844750] [2020-10-27 23:05:13,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:13,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:05:13,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113362062] [2020-10-27 23:05:13,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:05:13,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:13,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:05:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:05:13,076 INFO L87 Difference]: Start difference. First operand 80689 states and 104408 transitions. Second operand 10 states. [2020-10-27 23:05:13,304 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:05:15,322 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:05:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:26,220 INFO L93 Difference]: Finished difference Result 239980 states and 312652 transitions. [2020-10-27 23:05:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:05:26,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 23:05:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:27,235 INFO L225 Difference]: With dead ends: 239980 [2020-10-27 23:05:27,235 INFO L226 Difference]: Without dead ends: 159457 [2020-10-27 23:05:27,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:05:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159457 states. [2020-10-27 23:05:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159457 to 157081. [2020-10-27 23:05:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157081 states. [2020-10-27 23:05:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157081 states to 157081 states and 203684 transitions. [2020-10-27 23:05:40,914 INFO L78 Accepts]: Start accepts. Automaton has 157081 states and 203684 transitions. Word has length 87 [2020-10-27 23:05:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:40,915 INFO L481 AbstractCegarLoop]: Abstraction has 157081 states and 203684 transitions. [2020-10-27 23:05:40,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:05:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 157081 states and 203684 transitions. [2020-10-27 23:05:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:05:40,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:40,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:40,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:05:40,975 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1502636274, now seen corresponding path program 1 times [2020-10-27 23:05:40,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:40,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123755789] [2020-10-27 23:05:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:41,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 23:05:44,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 23:05:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,589 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:05:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:44,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:44,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:05:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:44,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:05:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:05:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:05:44,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:05:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:05:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:05:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:05:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:44,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:44,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 23:05:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:05:44,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:05:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 23:05:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 23:05:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:44,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:44,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 23:05:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:44,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 23:05:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:05:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 23:05:45,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123755789] [2020-10-27 23:05:45,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:05:45,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 23:05:45,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107621755] [2020-10-27 23:05:45,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:05:45,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:45,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:05:45,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:05:45,029 INFO L87 Difference]: Start difference. First operand 157081 states and 203684 transitions. Second operand 12 states. [2020-10-27 23:05:45,299 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:05:46,476 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:05:54,878 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:04,000 INFO L93 Difference]: Finished difference Result 358451 states and 465554 transitions. [2020-10-27 23:06:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:06:04,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2020-10-27 23:06:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:05,332 INFO L225 Difference]: With dead ends: 358451 [2020-10-27 23:06:05,332 INFO L226 Difference]: Without dead ends: 231568 [2020-10-27 23:06:05,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:06:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231568 states. [2020-10-27 23:06:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231568 to 228129. [2020-10-27 23:06:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228129 states. [2020-10-27 23:06:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228129 states to 228129 states and 294924 transitions. [2020-10-27 23:06:23,329 INFO L78 Accepts]: Start accepts. Automaton has 228129 states and 294924 transitions. Word has length 131 [2020-10-27 23:06:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:23,329 INFO L481 AbstractCegarLoop]: Abstraction has 228129 states and 294924 transitions. [2020-10-27 23:06:23,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:06:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 228129 states and 294924 transitions. [2020-10-27 23:06:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 23:06:23,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:23,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:06:23,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:06:23,379 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2099845728, now seen corresponding path program 1 times [2020-10-27 23:06:23,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:23,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996059991] [2020-10-27 23:06:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 23:06:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,717 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:06:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:06:28,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:06:28,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:06:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:28,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:06:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:06:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:06:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:06:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:06:28,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:06:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:06:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:28,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:28,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:06:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:06:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:06:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:29,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:06:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:06:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 23:06:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:06:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 23:06:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:29,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 23:06:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:29,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 23:06:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:06:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:06:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:06:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:29,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:29,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:06:29,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:06:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:06:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 23:06:29,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996059991] [2020-10-27 23:06:29,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:06:29,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 23:06:29,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444282698] [2020-10-27 23:06:29,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:06:29,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:29,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:06:29,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:06:29,225 INFO L87 Difference]: Start difference. First operand 228129 states and 294924 transitions. Second operand 13 states. [2020-10-27 23:06:29,720 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:30,500 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:06:30,720 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:06:30,963 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:06:31,488 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:06:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:53,857 INFO L93 Difference]: Finished difference Result 559535 states and 722764 transitions. [2020-10-27 23:06:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:06:53,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-10-27 23:06:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:55,729 INFO L225 Difference]: With dead ends: 559535 [2020-10-27 23:06:55,730 INFO L226 Difference]: Without dead ends: 331572 [2020-10-27 23:06:56,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 23:06:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331572 states.